I think you should look into the forum of the Club Admins club.
https://www.chess.com/club/club-admins
It seems likely that question would have come up previously. I looked for a while but didn't find anything immediately but I feel like it should be there somewhere.
I was wondering: is there a way for me (as tournament administrator) to end a tournament at a specific time?
If, for instance, the tournament is meant to end at the end of the year, but some players are so slow that they haven't completed it yet... is there a way to stop it, and the standings to then be used as end results?