In Blackboard both users and courses can be marked "unavailable". Courses that are unavailable can be viewed by the instructor, but not by the students. Courses are created unavailable and it is the instructor's responsibility to make the course available when it is time for the students to use the course. CRN courses are automatically made unavailable once at the end of the term; if the instructor wishes the students to continue using the course after the term is over, they can make the course available again.
Users that are unavailable to a particular course cannot view that course. Our automated enrollment processes use the availability of the user to indicate registered or dropped status.

When a course is created, it is automatically set to be unavailable to students. Students do not have access to your course until you make it available. In order to make the course available:
Three times a day the enrollment status of students in Blackboard courses associated with one or more CRNs is updated. Each student that remains banner-registered in that course is marked "available" and each student that drops the course via banner is marked "unavailable".
Dropped students are removed permanently from a course just three times a term: the first day of classes, the Monday after the add/drop period is over, and just before finals period.
When students are "unavailable" they still show up in the grade book, but they are not added to emails sent from the course and they cannot enter the blackboard course.
You cannot change the availability of a user who has enrolled via banner. This is done by the automated system.
If your course is NOT associated with a CRN you must do all enrollment updates manually or contact webhelp for help with one-time batch enrollments.
If you wish to change the availability of a student or instructor that you have added manually, follow these instructions:
Select the Properties button next to the user you wish to modify