Students are responsible for planning their schedules and fulfilling graduation requirements. Each semester you must make an appointment with your advisor to review your course selections. The advisor then removes the hold on your account so that you can register on-line at or after your appointed time (which you will get in your invitation to register).
The advisor for each option is listed on that option's contact page.
Students are bound by the graduation requirements listed in the Graduate Catalog the year they were admitted.