You can add new course material assets, and change existing course material assets at any time. For example, you can create new course materials before your class begins, then edit them during or after the course based on student feedback.
Notes
You can create course materials on the Course Materials> Add from Library page, the Course Materials > Manage Course Materials page.
For more information on creating and editing course materials, see:
Depending on your course design, you can create the following types of course materials: