On the face of it writing a screenplay is much simpler than writing a novel. You are creating a sequence of events that unfold one after another.
The movie script tell the cast and crew how to act and what to say. They are used by directors, producers, actors, and technical crew to create the highest quality movies within budget.
How do movie scripts get written? The process is long and tedious. It begins with a writer who has the idea for a story, then they will work on an outline that will include scenes and dialogue.