NigelOnDraft
Seriously? Are you with us? Why would it cost money?
One of the cabin crew stays on the Flight Deck momentarily with the PF until the PNF returns.
The CC is taken out of the service, making ££. It is small fry I accept.
But you miss the bigger reason I stated. Currently you require the CC on the Flt Deck to check the ID of the person entering, and action the door. If that system is not required, then the sole purpose of the CC there is to oversee the pilot - a rather big step to admit.