Originally Posted by coldpilot

Proffering to displace is a voluntary bid. Seat locks apply. You can't proffer to displace if you are seat locked and a seat lock is also incurred if you do proffer to displace.

All of it is explained in plain language in the "Displacement, furlough, recall '101'" guide put out by Eagle ALPA. It was sent out in an email on June 24.