Last time I was there, there were 3 set-up benches – the “final” stop before an instrument was cased, boxed, and shipped. I think these 3 people are the last to play an instrument before shipment, but there may be the (more than) occasional “hey, check out the ___ model __ I just strung up!” going between these folks and even other shop people. But there is no “one” person who declares a guitar “finished” –
What is very cool is that at any stage in the construction, right up to shipping, anyone in the shop can ask other opinions about anything they perceive is, or could be, a problem – and the sharing of information is quite free and robust!