What are the seat locks at mesaba? Specifically the following:

Initial FO seat lock
Seat Lock after your initial FO seat lock
Initial Captain upgrade Seat lock
Seat lock after initial Captain upgrade

And if you are under a current FO seat lock and you are eligible for an upgrade according to your seniority, can you get out of the FO seat lock to upgrade or do you have to ride your current FO seat lock out before the upgrade is possible?

thx