diff --git a/allianceauth/groupmanagement/managers.py b/allianceauth/groupmanagement/managers.py
index d85771dd..ad8db92e 100644
--- a/allianceauth/groupmanagement/managers.py
+++ b/allianceauth/groupmanagement/managers.py
@@ -14,8 +14,8 @@ class GroupManager:
 
     @classmethod
     def get_joinable_groups_for_user(
-        cls, user: User, include_hidden = True
-    ) -> QuerySet:
+        cls, user: User, include_hidden=True
+    ) -> QuerySet[Group]:
         """get groups a user could join incl. groups already joined"""
         groups_qs = cls.get_joinable_groups(user.profile.state)
 
@@ -28,24 +28,27 @@ class GroupManager:
         return groups_qs
 
     @staticmethod
-    def get_joinable_groups(state: State) -> QuerySet:
+    def get_joinable_groups(state: State) -> QuerySet[Group]:
         """get groups that can be joined by user with given state"""
-        return Group.objects\
-            .select_related('authgroup')\
-            .exclude(authgroup__internal=True)\
-            .filter(Q(authgroup__states=state) | Q(authgroup__states=None))
-
-    @staticmethod
-    def get_all_non_internal_groups() -> QuerySet:
-        """get groups that are not internal"""
-        return Group.objects\
-            .select_related('authgroup')\
+        return (
+            Group.objects
             .exclude(authgroup__internal=True)
+            .filter(Q(authgroup__states=state) | Q(authgroup__states=None))
+        )
 
     @staticmethod
-    def get_group_leaders_groups(user: User):
-        return Group.objects.select_related('authgroup').filter(authgroup__group_leaders__in=[user]) | \
-            Group.objects.select_related('authgroup').filter(authgroup__group_leader_groups__in=user.groups.all())
+    def get_all_non_internal_groups() -> QuerySet[Group]:
+        """get groups that are not internal"""
+        return Group.objects.exclude(authgroup__internal=True)
+
+    @staticmethod
+    def get_group_leaders_groups(user: User) -> QuerySet[Group]:
+        return (
+            Group.objects.filter(authgroup__group_leaders=user)
+            | Group.objects.filter(
+                authgroup__group_leader_groups__in=list(user.groups.all())
+            )
+        )
 
     @staticmethod
     def joinable_group(group: Group, state: State) -> bool:
@@ -57,12 +60,12 @@ class GroupManager:
         :param state: allianceauth.authentication.State object
         :return: bool True if its joinable, False otherwise
         """
-        if (len(group.authgroup.states.all()) != 0
+        if (
+            len(group.authgroup.states.all()) != 0
             and state not in group.authgroup.states.all()
         ):
             return False
-        else:
-            return not group.authgroup.internal
+        return not group.authgroup.internal
 
     @staticmethod
     def check_internal_group(group: Group) -> bool:
@@ -78,7 +81,7 @@ class GroupManager:
         return user.has_perm('auth.group_management')
 
     @classmethod
-    def can_manage_groups(cls, user:User ) -> bool:
+    def can_manage_groups(cls, user:User) -> bool:
         """
         For use with user_passes_test decorator.
         Check if the user can manage groups. Either has the
@@ -88,7 +91,10 @@ class GroupManager:
         :return: bool True if user can manage groups, False otherwise
         """
         if user.is_authenticated:
-            return cls.has_management_permission(user) or cls.get_group_leaders_groups(user)
+            return (
+                cls.has_management_permission(user)
+                or cls.get_group_leaders_groups(user)
+            )
         return False
 
     @classmethod
@@ -100,19 +106,19 @@ class GroupManager:
         :return: True if the user can manage the group
         """
         if user.is_authenticated:
-            return cls.has_management_permission(user) or cls.get_group_leaders_groups(user).filter(pk=group.pk).exists()
+            return (
+                cls.has_management_permission(user)
+                or cls.get_group_leaders_groups(user).filter(pk=group.pk).exists()
+            )
         return False
 
     @classmethod
     def pending_requests_count_for_user(cls, user: User) -> int:
         """Returns the number of pending group requests for the given user"""
-
         if cls.has_management_permission(user):
             return GroupRequest.objects.all().count()
-        else:
-            return (
-                GroupRequest.objects
-                .filter(group__authgroup__group_leaders__exact=user)
-                .select_related("group__authgroup__group_leaders")
-                .count()
-            )
+        return (
+            GroupRequest.objects
+            .filter(group__in=list(cls.get_group_leaders_groups(user)))
+            .count()
+        )
diff --git a/allianceauth/groupmanagement/migrations/0017_improve_groups_documentation.py b/allianceauth/groupmanagement/migrations/0017_improve_groups_documentation.py
new file mode 100644
index 00000000..f59adf18
--- /dev/null
+++ b/allianceauth/groupmanagement/migrations/0017_improve_groups_documentation.py
@@ -0,0 +1,42 @@
+# Generated by Django 3.2.9 on 2021-11-11 15:56
+
+from django.conf import settings
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        migrations.swappable_dependency(settings.AUTH_USER_MODEL),
+        ('auth', '0012_alter_user_first_name_max_length'),
+        ('authentication', '0019_merge_20211026_0919'),
+        ('groupmanagement', '0016_remove_grouprequest_status_field'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='authgroup',
+            name='group_leader_groups',
+            field=models.ManyToManyField(blank=True, help_text='Members of leader groups can process requests for this group. Use the <code>auth.group_management</code> permission to allow a user to manage all groups.<br>', related_name='leads_group_groups', to='auth.Group'),
+        ),
+        migrations.AlterField(
+            model_name='authgroup',
+            name='group_leaders',
+            field=models.ManyToManyField(blank=True, help_text='Group leaders can process requests for this group. Use the <code>auth.group_management</code> permission to allow a user to manage all groups.<br>', related_name='leads_groups', to=settings.AUTH_USER_MODEL),
+        ),
+        migrations.AlterField(
+            model_name='authgroup',
+            name='open',
+            field=models.BooleanField(default=False, help_text='Group is open and users will be automatically added upon request.<br>If the group is not open users will need their request manually approved.'),
+        ),
+        migrations.AlterField(
+            model_name='authgroup',
+            name='public',
+            field=models.BooleanField(default=False, help_text='Group is public. Any registered user is able to join this group, with visibility based on the other options set for this group.<br>Auth will not remove users from this group automatically when they are no longer authenticated.'),
+        ),
+        migrations.AlterField(
+            model_name='authgroup',
+            name='states',
+            field=models.ManyToManyField(blank=True, help_text='States listed here will have the ability to join this group provided they have the proper permissions.<br>', related_name='valid_states', to='authentication.State'),
+        ),
+    ]
diff --git a/allianceauth/groupmanagement/models.py b/allianceauth/groupmanagement/models.py
index 0959ccb1..c023c643 100644
--- a/allianceauth/groupmanagement/models.py
+++ b/allianceauth/groupmanagement/models.py
@@ -1,16 +1,26 @@
+from typing import Set
+
+from django.conf import settings
 from django.contrib.auth.models import Group
 from django.contrib.auth.models import User
 from django.db import models
 from django.db.models.signals import post_save
 from django.dispatch import receiver
+from django.utils.translation import gettext_lazy as _
+
 from allianceauth.authentication.models import State
+from allianceauth.notifications import notify
 
 
 class GroupRequest(models.Model):
+    """Request from a user for joining or leaving a group."""
     leave_request = models.BooleanField(default=0)
     user = models.ForeignKey(User, on_delete=models.CASCADE)
     group = models.ForeignKey(Group, on_delete=models.CASCADE)
 
+    def __str__(self):
+        return self.user.username + ":" + self.group.name
+
     @property
     def main_char(self):
         """
@@ -19,11 +29,22 @@ class GroupRequest(models.Model):
         """
         return self.user.profile.main_character
 
-    def __str__(self):
-        return self.user.username + ":" + self.group.name
+    def notify_leaders(self) -> None:
+        """Send notification to all group leaders about this request.
+
+        Note: No translations, because language for each leader is unknown
+        """
+        if not getattr(settings, 'GROUPMANAGEMENT_REQUESTS_NOTIFICATION', False):
+            return
+        keyword = "leave" if self.leave_request else "join"
+        title = f"Group Management: {keyword.title()} request for {self.group.name}"
+        message = f"{self.user} want's to {keyword} {self.group.name}."
+        for appover in self.group.authgroup.group_request_approvers():
+            notify(user=appover, title=title, message=message, level="info")
 
 
 class RequestLog(models.Model):
+    """Log entry about who joined and left a group and who approved it."""
     request_type = models.BooleanField(null=True)
     group = models.ForeignKey(Group, on_delete=models.CASCADE)
     request_info = models.CharField(max_length=254)
@@ -61,11 +82,12 @@ class AuthGroup(models.Model):
     e.g. group.authgroup.internal
 
     Logic:
-    Internal - not requestable by users, at all. Covers Corp_, Alliance_, Members etc groups.
-    Groups are internal by default
+    Internal - not requestable by users, at all. Covers Corp_, Alliance_,
+    Members etc groups. Groups are internal by default
 
-    Public - Other options are respected, but any user will be able to become and remain a member, even if they
-    have no API etc entered. Auth will not manage these groups automatically so user removal is up to
+    Public - Other options are respected, but any user will be able to become
+    and remain a member, even if they have no API etc entered.
+    Auth will not manage these groups automatically so user removal is up to
     group managers/leaders.
 
     Not Internal and:
@@ -75,46 +97,88 @@ class AuthGroup(models.Model):
         Not Open - Users requests must be approved before they are added to the group
     """
     group = models.OneToOneField(Group, on_delete=models.CASCADE, primary_key=True)
+    internal = models.BooleanField(
+        default=True,
+        help_text=_(
+            "Internal group, users cannot see, join or request to join this group.<br>"
+            "Used for groups such as Members, Corp_*, Alliance_* etc.<br>"
+            "<b>Overrides Hidden and Open options when selected.</b>"
+        )
+    )
+    hidden = models.BooleanField(
+        default=True,
+        help_text=_(
+            "Group is hidden from users but can still join with the correct link."
+        )
+    )
+    open = models.BooleanField(
+        default=False,
+        help_text=_(
+            "Group is open and users will be automatically added upon request.<br>"
+            "If the group is not open users will need their request manually approved."
+        )
+    )
+    public = models.BooleanField(
+        default=False,
+        help_text=_(
+            "Group is public. Any registered user is able to join this group, with "
+            "visibility based on the other options set for this group.<br>"
+            "Auth will not remove users from this group automatically when they "
+            "are no longer authenticated."
+        )
+    )
+    group_leaders = models.ManyToManyField(
+        User,
+        related_name='leads_groups',
+        blank=True,
+        help_text=_(
+            "Group leaders can process requests for this group. "
+            "Use the <code>auth.group_management</code> permission to allow "
+            "a user to manage all groups.<br>"
+        )
+    )
+    group_leader_groups = models.ManyToManyField(
+        Group,
+        related_name='leads_group_groups',
+        blank=True,
+        help_text=_(
+            "Members of leader groups can process requests for this group. "
+            "Use the <code>auth.group_management</code> permission "
+            "to allow a user to manage all groups.<br>")
+    )
+    states = models.ManyToManyField(
+        State,
+        related_name='valid_states',
+        blank=True,
+        help_text=_(
+            "States listed here will have the ability to join this group provided "
+            "they have the proper permissions.<br>"
+        )
+    )
+    description = models.TextField(
+        max_length=512,
+        blank=True,
+        help_text=_(
+            "Short description <i>(max. 512 characters)</i> "
+            "of the group shown to users."
+        )
+    )
 
-    internal = models.BooleanField(default=True,
-                                    help_text="Internal group, users cannot see, join or request to join this group.<br>"
-                                                "Used for groups such as Members, Corp_*, Alliance_* etc.<br>"
-                                                "<b>Overrides Hidden and Open options when selected.</b>")
-    hidden = models.BooleanField(default=True, help_text="Group is hidden from users but can still join with the correct link.")
-    open = models.BooleanField(default=False,
-                                help_text="Group is open and users will be automatically added upon request. <br>"
-                                            "If the group is not open users will need their request manually approved.")
-    public = models.BooleanField(default=False,
-                                help_text="Group is public. Any registered user is able to join this group, with "
-                                        "visibility based on the other options set for this group.<br> Auth will "
-                                        "not remove users from this group automatically when they are no longer "
-                                        "authenticated.")
-    # Group leaders have management access to this group
-    group_leaders = models.ManyToManyField(User, related_name='leads_groups', blank=True,
-                                            help_text="Group leaders can process group requests for this group "
-                                                        "specifically. Use the auth.group_management permission to allow "
-                                                        "a user to manage all groups.")
-    # allow groups to be *group leads*
-    group_leader_groups = models.ManyToManyField(Group, related_name='leads_group_groups', blank=True,
-                                                help_text="Group leaders can process group requests for this group "
-                                                            "specifically. Use the auth.group_management permission to allow "
-                                                            "a user to manage all groups.")
-
-    states = models.ManyToManyField(State, related_name='valid_states', blank=True,
-                                    help_text="States listed here will have the ability to join this group provided "
-                                                "they have the proper permissions.")
-
-    description = models.TextField(max_length=512, blank=True, help_text="Short description <i>(max. 512 characters)"
-                                                                         "</i> of the group shown to users.")
+    class Meta:
+        permissions = (
+            ("request_groups", _("Can request non-public groups")),
+        )
+        default_permissions = tuple()
 
     def __str__(self):
         return self.group.name
 
-    class Meta:
-        permissions = (
-            ("request_groups", "Can request non-public groups"),
+    def group_request_approvers(self) -> Set[User]:
+        """Return all users who can approve a group request."""
+        return set(
+            self.group_leaders.all()
+            | User.objects.filter(groups__in=list(self.group_leader_groups.all()))
         )
-        default_permissions = tuple()
 
 
 @receiver(post_save, sender=Group)
diff --git a/allianceauth/groupmanagement/tests/test_managers.py b/allianceauth/groupmanagement/tests/test_managers.py
index c8f9ae53..f656d99e 100644
--- a/allianceauth/groupmanagement/tests/test_managers.py
+++ b/allianceauth/groupmanagement/tests/test_managers.py
@@ -1,8 +1,5 @@
-from unittest.mock import Mock, patch
-
 from django.contrib.auth.models import Group, User
 from django.test import TestCase
-from django.urls import reverse
 
 from allianceauth.eveonline.models import EveCorporationInfo, EveAllianceInfo
 from allianceauth.tests.auth_utils import AuthUtils
@@ -44,9 +41,9 @@ class GroupManagementVisibilityTestCase(TestCase):
         self._refresh_user()
         groups = GroupManager.get_group_leaders_groups(self.user)
 
-        self.assertIn(self.group1, groups)  #avail due to user
-        self.assertNotIn(self.group2, groups)  #not avail due to group
-        self.assertNotIn(self.group3, groups)  #not avail at all
+        self.assertIn(self.group1, groups)  # avail due to user
+        self.assertNotIn(self.group2, groups)  # not avail due to group
+        self.assertNotIn(self.group3, groups)  # not avail at all
 
         self.user.groups.add(self.group1)
         self._refresh_user()
@@ -71,70 +68,66 @@ class GroupManagementVisibilityTestCase(TestCase):
 
 
 class TestGroupManager(TestCase):
-
-    @classmethod
-    def setUpClass(cls):
-        super().setUpClass()
-
+    def setUp(self) -> None:
         # group 1
-        cls.group_default = Group.objects.create(name='default')
-        cls.group_default.authgroup.description = 'Default Group'
-        cls.group_default.authgroup.internal = False
-        cls.group_default.authgroup.hidden = False
-        cls.group_default.authgroup.save()
+        self.group_default = Group.objects.create(name='default')
+        self.group_default.authgroup.description = 'Default Group'
+        self.group_default.authgroup.internal = False
+        self.group_default.authgroup.hidden = False
+        self.group_default.authgroup.save()
 
         # group 2
-        cls.group_internal = Group.objects.create(name='internal')
-        cls.group_internal.authgroup.description = 'Internal Group'
-        cls.group_internal.authgroup.internal = True
-        cls.group_internal.authgroup.save()
+        self.group_internal = Group.objects.create(name='internal')
+        self.group_internal.authgroup.description = 'Internal Group'
+        self.group_internal.authgroup.internal = True
+        self.group_internal.authgroup.save()
 
         # group 3
-        cls.group_hidden = Group.objects.create(name='hidden')
-        cls.group_hidden.authgroup.description = 'Hidden Group'
-        cls.group_hidden.authgroup.internal = False
-        cls.group_hidden.authgroup.hidden = True
-        cls.group_hidden.authgroup.save()
+        self.group_hidden = Group.objects.create(name='hidden')
+        self.group_hidden.authgroup.description = 'Hidden Group'
+        self.group_hidden.authgroup.internal = False
+        self.group_hidden.authgroup.hidden = True
+        self.group_hidden.authgroup.save()
 
         # group 4
-        cls.group_open = Group.objects.create(name='open')
-        cls.group_open.authgroup.description = 'Open Group'
-        cls.group_open.authgroup.internal = False
-        cls.group_open.authgroup.hidden = False
-        cls.group_open.authgroup.open = True
-        cls.group_open.authgroup.save()
+        self.group_open = Group.objects.create(name='open')
+        self.group_open.authgroup.description = 'Open Group'
+        self.group_open.authgroup.internal = False
+        self.group_open.authgroup.hidden = False
+        self.group_open.authgroup.open = True
+        self.group_open.authgroup.save()
 
         # group 5
-        cls.group_public_1 = Group.objects.create(name='public 1')
-        cls.group_public_1.authgroup.description = 'Public Group 1'
-        cls.group_public_1.authgroup.internal = False
-        cls.group_public_1.authgroup.hidden = False
-        cls.group_public_1.authgroup.public = True
-        cls.group_public_1.authgroup.save()
+        self.group_public_1 = Group.objects.create(name='public 1')
+        self.group_public_1.authgroup.description = 'Public Group 1'
+        self.group_public_1.authgroup.internal = False
+        self.group_public_1.authgroup.hidden = False
+        self.group_public_1.authgroup.public = True
+        self.group_public_1.authgroup.save()
 
         # group 6
-        cls.group_public_2 = Group.objects.create(name='public 2')
-        cls.group_public_2.authgroup.description = 'Public Group 2'
-        cls.group_public_2.authgroup.internal = False
-        cls.group_public_2.authgroup.hidden = True
-        cls.group_public_2.authgroup.open = True
-        cls.group_public_2.authgroup.public = True
-        cls.group_public_2.authgroup.save()
+        self.group_public_2 = Group.objects.create(name='public 2')
+        self.group_public_2.authgroup.description = 'Public Group 2'
+        self.group_public_2.authgroup.internal = False
+        self.group_public_2.authgroup.hidden = True
+        self.group_public_2.authgroup.open = True
+        self.group_public_2.authgroup.public = True
+        self.group_public_2.authgroup.save()
 
         # group 7
-        cls.group_default_member = Group.objects.create(name='default members')
-        cls.group_default_member.authgroup.description = \
+        self.group_default_member = Group.objects.create(name='default members')
+        self.group_default_member.authgroup.description = \
             'Default Group for members only'
-        cls.group_default_member.authgroup.internal = False
-        cls.group_default_member.authgroup.hidden = False
-        cls.group_default_member.authgroup.open = False
-        cls.group_default_member.authgroup.public = False
-        cls.group_default_member.authgroup.states.add(
+        self.group_default_member.authgroup.internal = False
+        self.group_default_member.authgroup.hidden = False
+        self.group_default_member.authgroup.open = False
+        self.group_default_member.authgroup.public = False
+        self.group_default_member.authgroup.states.add(
             AuthUtils.get_member_state()
         )
-        cls.group_default_member.authgroup.save()
+        self.group_default_member.authgroup.save()
 
-    def setUp(self):
+        # user
         self.user = AuthUtils.create_user('Bruce Wayne')
 
     def test_get_joinable_group_member(self):
@@ -241,7 +234,7 @@ class TestGroupManager(TestCase):
 
     def test_get_joinable_groups_for_user_member_w_permission(self):
         AuthUtils.assign_state(self.user, AuthUtils.get_member_state(), True)
-        AuthUtils.add_permission_to_user_by_name(
+        self.user = AuthUtils.add_permission_to_user_by_name(
             'groupmanagement.request_groups', self.user
         )
         result = GroupManager.get_joinable_groups_for_user(self.user)
@@ -257,7 +250,7 @@ class TestGroupManager(TestCase):
 
     def test_get_joinable_groups_for_user_member_w_permission_no_hidden(self):
         AuthUtils.assign_state(self.user, AuthUtils.get_member_state(), True)
-        AuthUtils.add_permission_to_user_by_name(
+        self.user = AuthUtils.add_permission_to_user_by_name(
             'groupmanagement.request_groups', self.user
         )
         result = GroupManager.get_joinable_groups_for_user(
@@ -273,7 +266,7 @@ class TestGroupManager(TestCase):
 
     def test_has_management_permission(self):
         user = AuthUtils.create_user('Clark Kent')
-        AuthUtils.add_permission_to_user_by_name(
+        user = AuthUtils.add_permission_to_user_by_name(
             'auth.group_management', user
         )
         self.assertTrue(GroupManager.has_management_permission(user))
@@ -288,7 +281,7 @@ class TestGroupManager(TestCase):
 
     def test_can_manage_groups_has_perm(self):
         user = AuthUtils.create_user('Clark Kent')
-        AuthUtils.add_permission_to_user_by_name(
+        user = AuthUtils.add_permission_to_user_by_name(
             'auth.group_management', user
         )
         self.assertTrue(GroupManager.can_manage_groups(user))
@@ -306,7 +299,7 @@ class TestGroupManager(TestCase):
 
     def test_can_manage_group_has_perm(self):
         user = AuthUtils.create_user('Clark Kent')
-        AuthUtils.add_permission_to_user_by_name(
+        user = AuthUtils.add_permission_to_user_by_name(
             'auth.group_management', user
         )
         self.assertTrue(
@@ -433,11 +426,21 @@ class TestPendingRequestsCountForUser(TestCase):
         # when user_requestor is requesting access to group 1
         # then return 1 for user_leader_4
         user_leader_4 = AuthUtils.create_member("Lex Luther")
-        AuthUtils.add_permission_to_user_by_name("auth.group_management", user_leader_4)
-        user_leader_4 = User.objects.get(pk=user_leader_4.pk)
-        GroupRequest.objects.create(
-            user=self.user_requestor, group=self.group_1
+        user_leader_4 = AuthUtils.add_permission_to_user_by_name(
+            "auth.group_management", user_leader_4
         )
+        GroupRequest.objects.create(user=self.user_requestor, group=self.group_1)
         self.assertEqual(
             GroupManager.pending_requests_count_for_user(self.user_leader_1), 1
         )
+
+    def test_single_request_for_members_of_leading_group(self):
+        # given
+        leader_group = Group.objects.create(name="Leaders")
+        self.group_3.authgroup.group_leader_groups.add(leader_group)
+        self.user_leader_1.groups.add(leader_group)
+        GroupRequest.objects.create(user=self.user_requestor, group=self.group_3)
+        # when
+        result = GroupManager.pending_requests_count_for_user(self.user_leader_1)
+        # then
+        self.assertEqual(result, 1)
diff --git a/allianceauth/groupmanagement/tests/test_models.py b/allianceauth/groupmanagement/tests/test_models.py
index d3737e4f..b8179550 100644
--- a/allianceauth/groupmanagement/tests/test_models.py
+++ b/allianceauth/groupmanagement/tests/test_models.py
@@ -1,31 +1,22 @@
 from unittest import mock
 
-from django.contrib.auth.models import User, Group
-from django.test import TestCase
+from django.contrib.auth.models import Group
+from django.test import TestCase, override_settings
 
 from allianceauth.tests.auth_utils import AuthUtils
-from allianceauth.eveonline.models import (
-    EveCorporationInfo, EveAllianceInfo, EveCharacter
-)
 
 from ..models import GroupRequest, RequestLog
 
+MODULE_PATH = "allianceauth.groupmanagement.models"
+
 
 def create_testdata():
-    # clear DB
-    User.objects.all().delete()
-    Group.objects.all().delete()
-    EveCharacter.objects.all().delete()
-    EveCorporationInfo.objects.all().delete()
-    EveAllianceInfo.objects.all().delete()
-
     # group 1
     group = Group.objects.create(name='Superheros')
     group.authgroup.description = 'Default Group'
     group.authgroup.internal = False
     group.authgroup.hidden = False
     group.authgroup.save()
-
     # user 1
     user_1 = AuthUtils.create_user('Bruce Wayne')
     AuthUtils.add_main_character_2(
@@ -37,7 +28,6 @@ def create_testdata():
     )
     user_1.groups.add(group)
     group.authgroup.group_leaders.add(user_1)
-
     # user 2
     user_2 = AuthUtils.create_user('Clark Kent')
     AuthUtils.add_main_character_2(
@@ -45,18 +35,25 @@ def create_testdata():
         name='Clark Kent',
         character_id=1002,
         corp_id=2002,
-        corp_name='Wayne Technologies'
+        corp_name='Wayne Food'
     )
-    return group, user_1, user_2
-
+    # user 3
+    user_3 = AuthUtils.create_user('Peter Parker')
+    AuthUtils.add_main_character_2(
+        user_2,
+        name='Peter Parker',
+        character_id=1003,
+        corp_id=2002,
+        corp_name='Wayne Food'
+    )
+    return group, user_1, user_2, user_3
 
 
 class TestGroupRequest(TestCase):
-
     @classmethod
     def setUpClass(cls):
         super().setUpClass()
-        cls.group, cls.user_1, _ = create_testdata()
+        cls.group, cls.user_1, cls.user_2, cls.user_3 = create_testdata()
 
     def test_main_char(self):
         group_request = GroupRequest.objects.create(
@@ -74,13 +71,85 @@ class TestGroupRequest(TestCase):
         expected = 'Bruce Wayne:Superheros'
         self.assertEqual(str(group_request), expected)
 
+    @override_settings(GROUPMANAGEMENT_REQUESTS_NOTIFICATION=True)
+    def test_should_notify_leaders_about_join_request(self):
+        # given
+        group_request = GroupRequest.objects.create(
+            user=self.user_2, group=self.group
+        )
+        # when
+        with mock.patch(MODULE_PATH + ".notify") as mock_notify:
+            group_request.notify_leaders()
+        # then
+        self.assertTrue(mock_notify.called)
+        _, kwargs = mock_notify.call_args
+        self.assertEqual(kwargs["user"],self.user_1)
+
+    @override_settings(GROUPMANAGEMENT_REQUESTS_NOTIFICATION=True)
+    def test_should_notify_leaders_about_leave_request(self):
+        # given
+        group_request = GroupRequest.objects.create(
+            user=self.user_2, group=self.group
+        )
+        # when
+        with mock.patch(MODULE_PATH + ".notify") as mock_notify:
+            group_request.notify_leaders()
+        # then
+        self.assertTrue(mock_notify.called)
+
+    @override_settings(GROUPMANAGEMENT_REQUESTS_NOTIFICATION=True)
+    def test_should_handle_notify_leaders_without_leaders(self):
+        # given
+        group = Group.objects.create(name='Dummy')
+        group.authgroup.internal = False
+        group.authgroup.hidden = False
+        group.authgroup.save()
+        group_request = GroupRequest.objects.create(
+            user=self.user_2, group=group
+        )
+        # when
+        with mock.patch(MODULE_PATH + ".notify") as mock_notify:
+            group_request.notify_leaders()
+        # then
+        self.assertFalse(mock_notify.called)
+
+    @override_settings(GROUPMANAGEMENT_REQUESTS_NOTIFICATION=False)
+    def test_should_not_notify_leaders_if_disabled(self):
+        # given
+        group_request = GroupRequest.objects.create(
+            user=self.user_2, group=self.group
+        )
+        # when
+        with mock.patch(MODULE_PATH + ".notify") as mock_notify:
+            group_request.notify_leaders()
+        # then
+        self.assertFalse(mock_notify.called)
+
+    @override_settings(GROUPMANAGEMENT_REQUESTS_NOTIFICATION=True)
+    def test_should_notify_members_of_leader_groups_about_join_request(self):
+        # given
+        child_group = Group.objects.create(name='Child')
+        child_group.authgroup.internal = False
+        child_group.authgroup.hidden = False
+        child_group.authgroup.save()
+        child_group.authgroup.group_leader_groups.add(self.group)
+        group_request = GroupRequest.objects.create(
+            user=self.user_2, group=child_group
+        )
+        # when
+        with mock.patch(MODULE_PATH + ".notify") as mock_notify:
+            group_request.notify_leaders()
+        # then
+        self.assertTrue(mock_notify.called)
+        _, kwargs = mock_notify.call_args
+        self.assertEqual(kwargs["user"],self.user_1)
+
 
 class TestRequestLog(TestCase):
-
     @classmethod
     def setUpClass(cls):
         super().setUpClass()
-        cls.group, cls.user_1, cls.user_2 = create_testdata()
+        cls.group, cls.user_1, cls.user_2, _ = create_testdata()
 
     def test_requestor(self):
         request_log = RequestLog.objects.create(
@@ -126,7 +195,7 @@ class TestRequestLog(TestCase):
             group=self.group,
             request_info='Clark Kent:Superheros',
             request_actor=self.user_1,
-            action = True
+            action=True
         )
         expected = 'Accept'
         self.assertEqual(request_log.action_to_str(), expected)
@@ -136,7 +205,7 @@ class TestRequestLog(TestCase):
             group=self.group,
             request_info='Clark Kent:Superheros',
             request_actor=self.user_1,
-            action = False
+            action=False
         )
         expected = 'Reject'
         self.assertEqual(request_log.action_to_str(), expected)
@@ -146,14 +215,13 @@ class TestRequestLog(TestCase):
             group=self.group,
             request_info='Clark Kent:Superheros',
             request_actor=self.user_1,
-            action = False
+            action=False
         )
         expected = self.user_2.profile.main_character
         self.assertEqual(request_log.req_char(), expected)
 
 
 class TestAuthGroup(TestCase):
-
     def test_str(self):
         group = Group.objects.create(name='Superheros')
         group.authgroup.description = 'Default Group'
@@ -163,3 +231,56 @@ class TestAuthGroup(TestCase):
 
         expected = 'Superheros'
         self.assertEqual(str(group.authgroup), expected)
+
+
+class TestAuthGroupRequestApprovers(TestCase):
+    def setUp(self) -> None:
+        self.group, self.user_1, self.user_2, self.user_3 = create_testdata()
+
+    def test_should_return_leaders_of_main_group_only(self):
+        # when
+        leaders = self.group.authgroup.group_request_approvers()
+        # then
+        self.assertSetEqual(leaders, {self.user_1})
+
+    def test_should_return_members_of_leading_groups_only(self):
+        # given
+        parent_group = Group.objects.create(name='Parent')
+        parent_group.authgroup.group_leaders.add(self.user_2)
+        self.user_1.groups.add(parent_group)
+        child_group = Group.objects.create(name='Child')
+        child_group.authgroup.internal = False
+        child_group.authgroup.hidden = False
+        child_group.authgroup.save()
+        child_group.authgroup.group_leader_groups.add(parent_group)
+        # when
+        leaders = child_group.authgroup.group_request_approvers()
+        # then
+        self.assertSetEqual(leaders, {self.user_1})
+
+    def test_should_return_leaders_of_main_group_and_members_of_leading_groups(self):
+        # given
+        parent_group = Group.objects.create(name='Parent')
+        parent_group.authgroup.group_leaders.add(self.user_2)
+        self.user_1.groups.add(parent_group)
+        child_group = Group.objects.create(name='Child')
+        child_group.authgroup.internal = False
+        child_group.authgroup.hidden = False
+        child_group.authgroup.save()
+        child_group.authgroup.group_leaders.add(self.user_3)
+        child_group.authgroup.group_leader_groups.add(self.group)
+        # when
+        leaders = child_group.authgroup.group_request_approvers()
+        # then
+        self.assertSetEqual(leaders, {self.user_1, self.user_3})
+
+    def test_can_handle_group_without_leaders(self):
+        # given
+        child_group = Group.objects.create(name='Child')
+        child_group.authgroup.internal = False
+        child_group.authgroup.hidden = False
+        child_group.authgroup.save()
+        # when
+        leaders = child_group.authgroup.group_request_approvers()
+        # then
+        self.assertSetEqual(leaders, set())
diff --git a/allianceauth/groupmanagement/views.py b/allianceauth/groupmanagement/views.py
index f351c288..994447dc 100755
--- a/allianceauth/groupmanagement/views.py
+++ b/allianceauth/groupmanagement/views.py
@@ -359,6 +359,7 @@ def group_request_add(request, group_id):
     grouprequest.leave_request = False
     grouprequest.save()
     logger.info(f"Created group request for user {request.user} to group {Group.objects.get(id=group_id)}")
+    grouprequest.notify_leaders()
     messages.success(request, _('Applied to group %(group)s.') % {"group": group})
     return redirect("groupmanagement:groups")
 
@@ -400,5 +401,6 @@ def group_request_leave(request, group_id):
     grouprequest.leave_request = True
     grouprequest.save()
     logger.info(f"Created group leave request for user {request.user} to group {Group.objects.get(id=group_id)}")
+    grouprequest.notify_leaders()
     messages.success(request, _('Applied to leave group %(group)s.') % {"group": group})
     return redirect("groupmanagement:groups")
diff --git a/docs/features/core/groupmanagement.md b/docs/features/core/groupmanagement.md
index 8abfeb2e..1f2685ea 100644
--- a/docs/features/core/groupmanagement.md
+++ b/docs/features/core/groupmanagement.md
@@ -35,6 +35,19 @@ Group leaders have the same abilities as users with the `group_management` permi
 
 This allows you to more finely control who has access to manage which groups.
 
+## Settings
+
+Here is a list of available settings for Group Management. They can be configured by adding them to your AA settings file (``local.py``).
+Note that all settings are optional and the app will use the documented default settings if they are not used.
+
+```eval_rst
++---------------------------------------------+---------------------------------------------------------------------------+------------+
+| Name                                        | Description                                                               | Default    |
++=============================================+===========================================================================+============+
+| ``GROUPMANAGEMENT_REQUESTS_NOTIFICATION``   | Send Auth notifications to all group leaders for join and leave requests. | ``False``  |
++---------------------------------------------+---------------------------------------------------------------------------+------------+
+```
+
 ## Permissions
 
 Group Management should be mostly done using group leaders, a series of permissions are included below for thoroughness.
diff --git a/docs/requirements.txt b/docs/requirements.txt
index e65b4859..cbbe8ebd 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -4,12 +4,12 @@ sphinx_rtd_theme==0.5.0
 recommonmark==0.6.0
 
 # Autodoc dependencies
-django>=3.1.1,<4.0.0
+django>=3.2,<4.0.0
 django-celery-beat>=2.0.0
 django-bootstrap-form
 django-sortedm2m
-django-esi>=1.5,<3.0
-celery>=4.3.0,<5.0.0,!=4.4.4
+django-esi>=3,<4
+celery>5,<6
 celery_once
 passlib
 redis>=3.3.1,<4.0.0