If you do not see this feature, your institution 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 of your institution, course, organization, and personal calendar events. Calendar events are color coded by course.
When accessed from a course, instructors and students see the course calendar from the course menu on the Tools page. Instructors can use the calendar course tool as a primary way of managing and communicating the schedule of events and assignments in the course. Calendar supports due dates, if set, for gradable items. Clicking on calendar items allows an instructor to view or edit the item, or grade attempts on the associated item.
Students can use filtering options to selectively view only course level items. They can then click on an item to view item details, and if supported, create an attempt against the item.
Users can create recurring events by selecting the Repeat checkbox.