How do i change or remove a "waiting room" game?

Sorry if this has been asked before. There's just so many old threads.

I've listed a request for new games in the waiting room, and I want to remove it. Does anyone know how to do that?

A crude method is to connect using a different name, accept the invitations, and resign the games.

You can't delete them by your own, but they are deleted by the server after about 30 days.

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