Even before touching a camera, everything should be worked out, even to the point of having the second camera angles sorted for potential alternate shots to be used during editing.

The only thing after filming is editing and minor post production like text overlays, credits and such.

Doing everything up front also keeps your shooting budget down, as you won’t have to go back and reshoot something if there is a problem.

Heck, I have seen comedy programs go out on weekends and shoot everything with handy cams just to test locations, and check natural lighting.