Add the online users block to the site page. Simulate logged in users by logging in as a few different users using separate browsers/computers. Verify that all logged in users still appear in the block. Create or use a course with separated groups forced (create groups as needed) Add the online users block. Log in as a few students from each group Log in as a student who is in one of the groups Make sure that you can't see the students from other groups Verify that all recently logged in users who are part of the student group still appear in the block while others are not. Add the block to a another course (no groups this time). Log in as some users and do not go to your test course, but with some users do go into your course Log in as a final user and go to the course Make sure you only see the users who went to the test course