Originally Posted by
StartngOvr
Is the SC window preference also an obligation on their part, or required compliance like the “If needed” trip preference?
If scheds determines you are "needed" to sit SC with a few other pilot, then they are obligated to look at your "if needed" preferences and award in seniority order.
If you haven't already, please go read Sched Alert 19-02 for a detailed break down of how "if needed" works.