How to acquire or delete chamber from user?

How to acquire or delete chamber from user?

Today I needed to acquire the secrets in a chamber because the employee shared the chamber with me but accidentally did not give me edit access to it. So I acquired the secrets in the chamber, since there was no way to acquire the chamber itself, and then put them in a new chamber.

Now the old chamber is empty but still shows up, and I cannot delete it or do anything with it. In this case it doesn't matter because I'll just ask the employee to delete it, but what would I do if an employee had a bunch of chambers and left, so that we wouldn't have empty chambers sitting their forever that we can't edit or delete?

Thanks