For all Public Groups, the deadline to submit your final pick each week will be on Sunday at 1:00 pm ET. Private Group creators may elect to use this deadline (by default) or the alternate deadline of "5 minutes before the first game of each week," which may be on a Thursday or Saturday during some weeks.
If you are in a group that uses the Sunday at 1:00 pm ET deadline and want to pick a game that occurs before the deadline (e.g., a Thursday night game), you must pick that game by its scheduled start time.
Your group's deadline setting can be found by clicking on the "Settings" link from a group page. Additionally, the specific weekly deadline will be listed on your picks Overview and Picks pages.
Sorry, but it isn't possible to edit picks after the weekly deadline. Similarly, it isn't possible to join a group after the first weekly deadline for that group has passed.
Additionally, it isn't possible for group commissioners to edit picks after the deadline or reactivate individual members without resetting the entire group.