might be the purser or whatever they're called now - I was on QF 380 in F last year and she let me get changed there as the toilets were full (just a bit of desk and paperwork area)
The jump seat at that door is a 'High Comfort Seat' so crew can use it for their break if they don't want to use the bunks. It has a table that can be attached, it can recline, and has a leg rest that folds out too.
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