Zoom Webinar Question

hey

So, I have integrated Zoom Webinar with SFDC and tested it as well. I still got couple of confusion though if someone could please help:

1: How can I segment registrants by “attended” and “did not attend” in SFDC, is it done automatically by zoom or I need to do something about it?

2: How to know (after webinar) if someone has submitted the Q&A?

appreciate the help and thanks in advance, thanks!