How does Houseparty work?

So I downloaded Houseparty, and I never know when I am being recorded or not... I also dont know what waving to people does, and I am not sure how to

So I downloaded Houseparty, and I never know when I am being recorded or not... I also don't know what waving to people does, and I am not sure how to join someone else.

or:So I downloaded Houseparty, and I never know when I am being recorded or not... I also don't know what waving to people does, and I am not sure how to join someone else.

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