Marking weeks you can't play

On the Availability tab of a season, you'll see every week as a button. Click a week to mark it unavailable (it turns red); click it again to make it available. When you're done, hit "Save unavailable weeks."

That's the whole interaction — no forms, no reasons required. If you want to leave a note for context (e.g. why you're out), that's part of a change request instead, not your general availability.

A few things worth knowing:

• You can update your unavailable weeks as many times as you like, right up until submission closes (see The submission window and deadline).
• If a change request or swap later moves a match onto a week you'd marked unavailable, that's between you and whoever it involves — availability and change requests are separate systems, and marking a week unavailable doesn't itself cancel anything already scheduled.
• The solver uses your unavailable weeks when it builds the schedule, so mark them before your admin generates it. Weeks you mark afterwards won't retroactively move an already-published match — that's what change requests are for.