diff --git a/backend/sophon/core/views.py b/backend/sophon/core/views.py
index 8c63f36..2943ece 100644
--- a/backend/sophon/core/views.py
+++ b/backend/sophon/core/views.py
@@ -207,6 +207,12 @@ class ResearchGroupViewSet(WriteSophonViewSet):
             "owner": self.request.user,
         }
 
+    def get_custom_serializer_classes(self):
+        if self.action in ["join", "leave"]:
+            return self.get_object().get_access_serializer(self.request.user)
+        else:
+            return serializers.NoneSerializer
+
     @action(detail=True, methods=["post"], name="Join group")
     def join(self, request, pk) -> Response:
         group = models.ResearchGroup.objects.get(pk=pk)
diff --git a/backend/sophon/notebooks/views.py b/backend/sophon/notebooks/views.py
index 2c1bdfc..ab94ce6 100644
--- a/backend/sophon/notebooks/views.py
+++ b/backend/sophon/notebooks/views.py
@@ -8,7 +8,7 @@ from rest_framework.request import Request
 from rest_framework.response import Response
 
 from sophon.core.models import ResearchGroup
-from sophon.core.serializers import dynamic_serializer
+from sophon.core.serializers import dynamic_serializer, NoneSerializer
 from sophon.core.views import SophonGroupViewSet
 from sophon.notebooks.models import Notebook
 from sophon.projects.models import ResearchProject
@@ -18,6 +18,12 @@ class NotebooksViewSet(SophonGroupViewSet, metaclass=abc.ABCMeta):
     def get_group_from_serializer(self, serializer) -> ResearchGroup:
         return serializer.validated_data["project"].group
 
+    def get_custom_serializer_classes(self):
+        if self.action in ["sync", "start", "lock", "unlock", "stop"]:
+            return self.get_object().get_access_serializer(self.request.user)
+        else:
+            return NoneSerializer
+
     @action(["PATCH"], detail=True)
     def sync(self, request: Request, **kwargs):
         """