How do I assign an "owner" to a Lessons page?
Unless specifically set on a page-by-page basis in Settings, pages are not owned by individual users. Instructors can add any site participant who does not have the Lessons tool update permission as an owner of a specific Lessons page. Owners are then granted Lessons tool update permission.
Go to Lessons.

Click on the Lessons tool in the Tool Menu to display the page.
Note: The default or blank Lessons page contains text and images that explain the basic functionality of the Lessons tool.