So I am the most senior JS listed of three listed. Two of us are present.

Gate agent asked if I would take the JS about 50 minutes prior to departure to get one more SA on.

Flight fairly full. I said let's wait a little longer. Anyway, at about 30 minutes prior she wants my decision.

A little back in forth as I asked her to wait until 20 minutes before departure as that seems to be when they clear SAs on a full flight.

No go, so I take a seat in the back so as not to screw a late show JS.

Don't know why she couldn't wait for one seat, just a bad attitude.