What role should I assign for a TA?

Teaching Assistant-TA can do anything that the professor can do.  In other words, we advise that he or she receives training to maintain this role.  As the professor, you are responsible if they make any unauthorized changes to your course shell.  

Non-editing Teacher can grade and teach, but cannot make any changes to the course shell.  

Content Teacher can do everything that the professor can do, except for grading assignments.  

Student is enrolled with minimal permission.  Students can only upload material on his or her own behalf.

Elluminate Live Moderator can control a Live session.  

If you are still having trouble to enroll or remove a student, click on this link.
Click here for a short video.  http://screencast.com/t/LbbaGLkBbfIl