If you do not see this feature, your school has not made it available.
The Calendar in Blackboard Learn has been significantly enhanced:
When accessed from My Blackboard or the Tools menu on the My Institution tab, the calendar displays a consolidated view of all institution, course, organization, and personal calendar events for a user. Calendar events are color coded by course.
When accessed from a course, you see the course calendar from the course menu on the Tools page.
You can use filtering options to selectively view only course level items. Click on an item to view item details, and if supported, create an attempt against the item.
You can create recurring events by selecting the Repeat checkbox.