Good artist copy, great artist steal...
And as for how things are handled... Ideally in sets i've worked with, if it has a good crew, that is all working toward the same goal... They all understand what they're working on, and work towards it, its much like a temporary family... Sometimes you could be with each other for years and never see each other until your next feature or possible years down the road... Ideally people have their titles and roles, but if i see something that isn't my department and i can fix it real quick, i'll do it if it will save time(that is if i'm treated right to begin with)...
As for one "logistical" person... Sure, the producer... HAHAHAH Ideally he is the liaison between the studio cats, and the "artist." But he's mostly an annoying pest that is only around for money purposes... Although, you would never think that considering how many people kiss his a@$...