The submission window and deadline

Whether you can submit your own availability at all is controlled by your admin, not something you toggle yourself.

If self-service is closed, you'll see a message saying availability submission is currently closed and that your admin manages it — that's normal for some clubs, not a bug. Contact your admin if you need a week marked.

If there's a deadline and it's passed, you'll see a message that the deadline has passed and to contact your admin for changes. Submitting before the deadline is what lets the solver actually use your input when it builds the schedule — a change submitted after generation doesn't retroactively rewrite it.

If an admin has submitted for you — because you asked them to, or you hadn't gotten to it — that's allowed, and it's recorded as coming from an admin rather than from you. It's exactly the same as if you'd submitted it yourself as far as the schedule is concerned; the only difference is who gets credited with entering it.

If none of this applies to you, submission is simply open — see Marking weeks you can't play.