What's the Deal With the Outline and Scenes?
The Outline and Scenes help organize and manage your screenplay. By collaborating on an Outline and Scene Summaries before writing the screenplay, you and your writers can agree on a direction for the screenplay.
Project owners can lock and unlock scenes and outlines to control the editing and writing as well - you could choose to work on only one scene at a time, and prevent editing on further scenes. Or you could open all of them up and lock them as they're completed. And, of course, you can always unlock scenes for revision.