AA SLF
That would be the centre console. Can't have the ladies offering an Elmer Batters glimpse to the pilots while getting in and out of the seat. Messes up the instrument scan when hand flying and may cause vertigo.
In two crew airliners, a cabin crew member is often trained to assist with cockpit duties in case of incapacitation.
AA's SOP in this regard will likely end up as a regulation.