I’m confused. I’ve got a background INT. Classroom front-Day, and it depicts the whole class, but when I write “a charecter stands at layer -1 it doesn’t work. Maybe there are backgrounds with integrated overlays as desks? Or how authors make it look like there is a whole classroom of students sitting at there desks, by loading tons of desks overlays?
It won’t work because this background is without an overlay. Try: INT. CLASSROOM FRONT OL - DAY (it’s just the front desks)
And yes if you need a full class of people you’ll need a lot of desk overlays.