Have a course with students enrolled and in groups. Create a database activity. In ratings set the aggregate type to something. Set group mode in 'Common module settings' to 'Separate groups' Add a field. Save the templates. Create an entry as the administrator (This should be in the "All participants" group). Go to [Database activity administration ► Permissions] and add the student to: mod/data:rate mod/data:viewallratings mod/data:viewanyrating mod/data:viewrating Log on as a student and rate the admin's record. Log on as another student in a different group and do the same. Click on the link for the ratings. A window should pop up with a list of students that have rated this record. There should be no error regarding appropriate permissions.