diff --git a/SAS/TMSS/backend/src/tmss/tmssapp/populate.py b/SAS/TMSS/backend/src/tmss/tmssapp/populate.py
index c57166935f1f6e96938719db390d9bf0ee220c88..7e17e4df0d9582f9630ea251e497262aea7eda53 100644
--- a/SAS/TMSS/backend/src/tmss/tmssapp/populate.py
+++ b/SAS/TMSS/backend/src/tmss/tmssapp/populate.py
@@ -117,7 +117,8 @@ permission_groups = {'system_setting': [viewsets.AntennaSetViewSet,
                      'blueprint_fixed': [viewsets.TaskBlueprintViewSet],
                      'operational': [viewsets.StationTimelineViewSet,
                                      viewsets.SettingViewSet,
-                                     viewsets.SystemSettingFlagViewSet],
+                                     viewsets.SystemSettingFlagViewSet,
+                                     viewsets.SubsystemViewSet],
                      'workflow': [],
                      'workflow_piverification': []
                      }