Courses are loaded into your domain as either gated or non-gated. Gating restricts the ability for a student to jump around within a course and requires them to work sequentially. Teachers and administrators can manage the gating of individual lessons with the following directions.
Enter the Editor view of the course.
Edit the lesson in question.
In settings, go to “Advanced activity options” and either check or uncheck the box requiring a student to complete a previous activity. Be sure to click “Save” when you have finished.