TMO. My screenshot isn't from career, I just started a single mission. So other than just shifting those officers, it's completely the default roster.
It's not the deck watch you gotta worry about, it's the gun crews
. If you've been moving the Deck watch all this time, that sentence probably just saved you a ton of work.
I can only guess at his layout, but the guys in the berth are probably his AA gunners. I would guess that he also moves the more important deck gun crew into the berth when it's an issue.
Personally, all that I ever put in the berth anymore is some of my deck gun crew.