Are we talking about detached woodframe homes?
Or residential concrete highrise?
I work for a company that does LOTS of the highrise flavour. Assembly-line style is the norm. Usually the crew is spread out over 3 floors.
Timing the material orders is key. Try to get one skid of boxes & fittings, and one skid of wire dropped per floor before the plumbers are done.
One guy does layout with a marked stick and black felt marker. Two guys mount boxes/panels and run the ENT chunks from the stub-downs in the ceiling. Two guys pull all the wire (pull wire & BX). Next, about 4-6 guys hit the floor to splice, secure the BX, pull string for the data runs, and terminate the panels. (Try to keep the data guy & panel guy on that task for a whole floor for accountability.)
Do the drill 30-35 times and the building's done