Courses on Blackboard are added based on course assignments in My Portal's Self Service section.
The list is updated on the even half-hours (so, 2:30, 4:30, 6:30, 8:30, etc). The process takes a few minutes to run, so changes may not be immediate.
If a course is not displaying, first check Self Service (via https://my.udmercy.edu) to confirm you've been assigned to the course there.
If a course is not listed on Self Service, students should contact the Office of the Registrar (313-993-3313). Faculty should contact their program chair (co-ordinator, etc).