Using default roles, create a new course. Assign 3 users as student, 2 as teacher and 2 as manager. Login as the manager, verify you can filter by "Manager, Teacher, Non-editing Teacher or Student" roles.  Verify you see the all the roles that are assigned to participants correctly. Login as a student. Verify you can only filter by Student, Teacher roles (but not Non-editing Teacher because no one has that role). Log in as admin Assign someone in the course the non-editing teacher role Log back in as a student Verify you can now filter by the non-editing teacher role Verify you only see the same set of roles where they are assigned to participants (you should not see the role of managers in the course).