Can't both guys who are cleaning (dual wanding) "post spot" while the 3rd guy does everything from pre spraying, spotting, moving fans, bring equipment in/out, basically everything that the 2 other guys can't do? I think even the main 1-2 guys can do the post spotting themselves if it's not a huge red stain, but spotters that come right out w/ red stain remover, fels naptha, and gel spotters one person can handle it.
We all have these on us at all times, minimizes having a 2nd person having to spot.
http://interlinksupply.com/index.php?item_num=AX108
We use 8oz bottles for the 3 main spotters - red stains, power gel, rust, carry a bar of fels natha, duckbill shears, and carpet shark. There's also room to hang a towel, but I prefer the towel clips.
This way you can dual wand most jobs above 3 rooms plus and still get carpets dry before you leave. With enough fans, airpaths/dripods it can be done w/ 1 guy moving them around. With the dripods each guy can even carry 4 dripods per person or 2 airpaths per person just to sat it in the house and let the spotter/fan guy move it all around.
I don't see any needs for more than one person to move hoses around, if you have clip/strap the hoses to the stairs if on 2nd floor and also have the same clip/strap 3 feet from the wand/rotovac also clipped to your belt there's no need for a 2nd person to move the hoses (unless they have nothing else to do).