In writing in general, there are discovery writers and outliners, planners vs. pantsers.
I am very curious to know how screenwriters create screenplays.
Do writers start with a basic plot and then add the scenes and arrange them, expanding on the plan? Or do they have a very very tiny basic plot and write the scenes in a more freestyle way?
Is planning/discovery significantly different when the goal is a screenplay instead of a short story or novel?
One reason I wonder about this is that a screenplay is meant as a collaborative tool, while a novel/short-story is the finished product.
Is more planning needed if more people will be involved, and because the goal is a fixed amount of pages/minutes? Or can you "pants" it, and then use the editing/collaboration time to bring things into focus?