diff --git a/app/content/views/registration.py b/app/content/views/registration.py
index 4aa3bf68c..c41a86823 100644
--- a/app/content/views/registration.py
+++ b/app/content/views/registration.py
@@ -13,6 +13,7 @@
 from app.common.pagination import BasePagination
 from app.common.permissions import (
     BasicViewPermission,
+    check_has_access,
     is_admin_group_user,
     is_admin_user,
 )
@@ -157,7 +158,22 @@ def _admin_unregister(self, registration):
     def add_registration(self, request, *_args, **_kwargs):
         """Add registration to event for admins"""
 
-        if not is_admin_group_user(request):
+        event_id = self.kwargs.get("event_id", None)
+        user_id = request.data["user"]
+
+        event = get_object_or_404(Event, id=event_id)
+        user = get_object_or_404(User, user_id=user_id)
+
+        organizing_group = event.organizer
+
+        is_member_or_leader_of_organizing_group = check_has_access(
+            [organizing_group], request
+        )
+
+        if (
+            not is_admin_group_user(request)
+            and not is_member_or_leader_of_organizing_group
+        ):
             return Response(
                 {
                     "detail": "Du har ikke tillatelse til å opprette en påmelding på dette arrangementet"
@@ -165,12 +181,6 @@ def add_registration(self, request, *_args, **_kwargs):
                 status=status.HTTP_403_FORBIDDEN,
             )
 
-        event_id = self.kwargs.get("event_id", None)
-        user_id = request.data["user"]
-
-        event = get_object_or_404(Event, id=event_id)
-        user = get_object_or_404(User, user_id=user_id)
-
         if not user.accepts_event_rules:
             return Response(
                 {
diff --git a/app/gallery/factories/_init_.py b/app/gallery/factories/_init_.py
new file mode 100644
index 000000000..e69de29bb
diff --git a/app/gallery/factories/album_factory.py b/app/gallery/factories/album_factory.py
new file mode 100644
index 000000000..e2abd6592
--- /dev/null
+++ b/app/gallery/factories/album_factory.py
@@ -0,0 +1,15 @@
+import factory
+from factory.django import DjangoModelFactory
+
+from app.gallery.models.album import Album
+
+
+class AlbumFactory(DjangoModelFactory):
+    class Meta:
+        model = Album
+
+    id = factory.Sequence(lambda n: f"picture_{n}")
+    image = factory.Faker("image")
+    title = factory.Faker("title")
+    image_alt = factory.Faker("image_alt")
+    description = factory.Faker("description")
diff --git a/app/gallery/migrations/0003_alter_album_options.py b/app/gallery/migrations/0003_alter_album_options.py
new file mode 100644
index 000000000..5d8f724bd
--- /dev/null
+++ b/app/gallery/migrations/0003_alter_album_options.py
@@ -0,0 +1,17 @@
+# Generated by Django 4.2.5 on 2024-10-21 17:00
+
+from django.db import migrations
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("gallery", "0002_remove_picture_album_album_id_alter_album_slug"),
+    ]
+
+    operations = [
+        migrations.AlterModelOptions(
+            name="album",
+            options={"ordering": ["-created_at"]},
+        ),
+    ]
diff --git a/app/gallery/models/album.py b/app/gallery/models/album.py
index 43dfe6722..b3caf6821 100644
--- a/app/gallery/models/album.py
+++ b/app/gallery/models/album.py
@@ -18,6 +18,9 @@ class Album(BaseModel, BasePermissionModel, OptionalImage):
     slug = models.SlugField(max_length=50, primary_key=False)
     write_access = AdminGroup.all()
 
+    class Meta:
+        ordering = ["-created_at"]
+
     def __str__(self):
         return self.title
 
diff --git a/app/tests/content/test_registration_integration.py b/app/tests/content/test_registration_integration.py
index 86d111158..eb7a39909 100644
--- a/app/tests/content/test_registration_integration.py
+++ b/app/tests/content/test_registration_integration.py
@@ -4,7 +4,7 @@
 
 import pytest
 
-from app.common.enums import AdminGroup
+from app.common.enums import AdminGroup, Groups
 from app.common.enums import NativeGroupType as GroupType
 from app.common.enums import NativeMembershipType as MembershipType
 from app.common.enums import NativeUserStudy as StudyType
@@ -1038,6 +1038,110 @@ def test_add_registration_to_event_as_member(member, event):
     assert response.status_code == status.HTTP_403_FORBIDDEN
 
 
+@pytest.mark.django_db
+@pytest.mark.parametrize(
+    "group_name",
+    [
+        Groups.JUBKOM,
+        Groups.REDAKSJONEN,
+        Groups.FONDET,
+        Groups.PLASK,
+        Groups.DRIFT,
+    ],
+)
+def test_add_registration_to_event_as_group_member(event, member, group_name):
+    """
+    A member of a specific group (not part of AdminGroup) should be able to add a
+    registration to an event if their group organized it.
+    """
+
+    member_group = add_user_to_group_with_name(
+        member, group_name, GroupType.SUBGROUP, MembershipType.MEMBER
+    )
+
+    event.organizer = member_group
+    event.save()
+
+    data = {"user": member.user_id, "event": event.id}
+    url = f"{_get_registration_url(event=event)}add/"
+
+    client = get_api_client(user=member)
+    response = client.post(url, data)
+
+    assert response.status_code == status.HTTP_201_CREATED
+
+
+@pytest.mark.django_db
+@pytest.mark.parametrize(
+    "group_name",
+    [
+        Groups.JUBKOM,
+        Groups.REDAKSJONEN,
+        Groups.FONDET,
+        Groups.PLASK,
+        Groups.DRIFT,
+    ],
+)
+def test_add_registration_to_event_as_group_member_of_non_organizing_group(
+    event, member, group_name
+):
+    """
+    A member of a specific group (not part of AdminGroup) should NOT be able to add a
+    registration to an event if their group did not organize it.
+    """
+    add_user_to_group_with_name(
+        member, group_name, GroupType.SUBGROUP, MembershipType.MEMBER
+    )
+
+    event.organizer = GroupFactory(name="Different Organizer")
+    event.save()
+
+    data = {"user": member.user_id, "event": event.id}
+    url = f"{_get_registration_url(event=event)}add/"
+
+    client = get_api_client(user=member)
+    response = client.post(url, data)
+
+    assert response.status_code == status.HTTP_403_FORBIDDEN
+
+
+@pytest.mark.django_db
+@pytest.mark.parametrize(
+    "group_name",
+    [
+        Groups.JUBKOM,
+        Groups.REDAKSJONEN,
+        Groups.FONDET,
+        Groups.PLASK,
+        Groups.DRIFT,
+    ],
+)
+def test_add_registration_when_event_is_full(event, member, group_name):
+    """
+    A member of the organizing group should be able to add a registration to an event
+    for another member even when the event is full, and the registration should be added to the waitlist.
+    """
+
+    member_group = add_user_to_group_with_name(
+        member, group_name, GroupType.SUBGROUP, MembershipType.MEMBER
+    )
+
+    event.organizer = member_group
+    event.limit = 1
+    event.save()
+
+    RegistrationFactory(event=event)
+
+    data = {"user": member.user_id, "event": event.id}
+    url = f"{_get_registration_url(event=event)}add/"
+
+    client = get_api_client(user=member)
+    response = client.post(url, data)
+
+    assert response.status_code == status.HTTP_201_CREATED
+    assert event.registrations.get(user=member).is_on_wait
+
+
 @pytest.mark.django_db
 @pytest.mark.parametrize(
     ("order_status", "status_code"),
diff --git a/app/tests/gallery/_init_.py b/app/tests/gallery/_init_.py
new file mode 100644
index 000000000..e69de29bb