The first person to arrive at the meeting is currently waiting in the foyer because they were unable to start the meeting as a cohost.
If the host schedules a meeting with the option “The first person to join the meeting who has a host account on this site becomes a cohost” enabled under Scheduling options > Cohost, and if the first attendee who joins does not have an account on the website, then the attendee will be waiting in the lobby until someone who joins the meeting as a cohost or host. This occurs if the host schedules a meeting with both of these options enabled.
You need to invite someone else who already has a host account on the same website if you want to start the meeting as a Cohost.