On24 + Marketo Event Integration

We recently set up a webinar in On24 and integrated it into our Marketo instance, set up multiple campaigns within this event (registration, attendance, and no show) and it seemed that everything was working, until i noticed that immediately after folks registered, it was adding them as an attendee. I am not sure if this is because we had all campaigns scheduled and turned on at once ( as opposed to turning on the attendee/no show campaigns once the event ends)? Any feedback or help on the flow steps or when to turn on the smart campaigns for a webinar is great appreciated. Examples below: