A webinar is not a party with an RSVP
It is worth drawing the line clearly. For a dinner or a wedding, guests reply yes or no on the page. A webinar is different, and My Joyfullday treats it as a separate, real product: a proper registration flow rather than a party RSVP. You describe the session to Jitabi the way you would describe any event, and what comes back is a webinar page built around people signing up and getting in.
That distinction is the whole value. A party headcount is a courtesy; a webinar needs to know exactly who is registered, hold a place for them, and hand each one a private way to attend. The assistant drafts toward that, not toward a guest list of yeses.