This is a quickie, due to a few persons asking the same questions....
Do your underlings (yuck word, yet sexy and true!) ever use the terminology..."Oui Chef"?
Answer to question one....Yes, yes they do....pretty much all the time I bark.
Answer to question two......When you have a busy pass/kitchen with activities going on all around, Front of house chatting, phones ringing etc., it is a logical call to receive when calling tickets, actions, or demanding activity from your backbone that is your squad.....Oui Chef means directly to yours truly, the crew heard and is on it like a tramp on binned chips......Simple as that.