How do I assign individual lessons?
Edited
Go to the Curriculum page in the teacher dashboard.
Find the course you want to assign and click the Assign button.
In the window that appears, select "Choose lessons" and choose the lessons you want to assign.
Pick the class or classes you want to assign the lessons to.
When you are ready to assign the next lesson to the class, find the course on the class lesson page, click Unassign on the lessons you are finished with, and then click Assign on the next lesson you want to add.