The Membership Content Listing element is an element you can use to automatically display sub pages from your main course pages to show a list or grid of lessons. This can be used for any kind of pages where you have subpages.

As soon as you install OptimizePress and create page, this element can be added to the page. Just know that you must have some subpages (child pages) published in order for it to show anything. 

Prepare your pages to use the Membership Content List element: