Multiple Alternative Hosts for a Webinar. What happens when...

Hello

I created a Webinar and designated multiple alternative hosts.

For example:

John Doe

Jane Dow

Dutch Schaeffer

Douglas Quaid

Ben Richards

If John Doe, one of the alternative hosts, starts the Webinar, what happens when Jane, Dutch, Douglas, and Ben join the Webinar? Are they put in the Attendee group, do they join as a Panelist, or do they join as a co-host?

Thanks