Labor coordination is a call-sheet problem first.
The point is to line up the right people, the right sequence, and the right shift handoff so the show never starts improvising its own schedule.
Build the call tree before the room fills up
If the call tree is vague, the crew starts solving its own timing problems on the floor.
The useful plan says who arrives, who relieves them, and who owns the next handoff before the first cart moves.
Protect the first and second waves
The first wave has to get the room moving, and the second wave has to be ready before the first one burns out.
That keeps the job from becoming a string of apologies and catch-up calls.