What are the exact requirements for saving a Cloud Recording file?

I found some references to "host" and "co-host," but changing them does not affect the results of the save, and when I tried it at hand, the cloud recording itself was not possible unless I was the meeting creator.

I'm tired of checking recording results while changing conditions one by one.

Is it a requirement that an account with cloud recording privileges (Pro plan or higher) create the meeting? Is it possible to join a meeting created by someone else and initiate a Cloud Recording?