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Make sure Edit Mode is ON.
Click on the Users and Groups area of the Control Panel.
Click on Users.
Click Find Users to Enroll.

TIP: The search field on the main Users page will ONLY look at your current roster, not the Blackboard directory of users to add someone new.
On the Add Enrollments page, enter the teaching assistant's or instructor's username (do NOT include @umbc.edu of their email address).
Select the appropriate role from the dropdown (Student, Interpreter, Teaching Assistant, Course Builder, Instructor, or Guest).
Leave enrollment availability set to YES.
WARNING
If you no longer want someone to have access to your course, you can change this to NO or remove the person altogether. However, removing the person will delete all user data including assessments, discussions, grades, etc., and this data cannot be recovered. Users can also be disabled, which preserves user data and removes users from a course, but you will need to request support from a Blackboard system admin.
Click on Submit.

https://www.youtube-nocookie.com/embed/1Ulpv3A_hhg

Instructors only need to enter the username in the box one time -- then click Submit. The browse box should only be used to search for a TA if the instructor does not know the username already.

Getting a permissions error? Please review this FAQ -> Why can't I add another user to my Blackboard course?

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