Originally Posted by scambo1

Actually, they do have a choice. A couple AEs ago, a DTW777A bid to ATLm88A - he was to be very senior. Initially, I thought he forgot to log off DALnet. The reality is he can now do day turns for fewer days worked and get GS's whenever he wants them.

My point being, seniority gives a person the ability to choose. A real-world example just backs that up.