Zoom meeting : add registrants

Hey,

I am trying to create a zoom meeting, where my end goal is to be able to host the meeting and at the same time add registrants to the meeting using the api end points. Whenever I try to add the registrant, I am getting an api response to upgrade to a PRO account or something and is not available for free users.

With that being said, if i buy the subscription, will i be able to host multiple meetings and if desired add registrants to the meetings ? And if yes, then do i need to be present to login and host the. meeting or if registrants open the link, they ll be able to start the meeting?

Also, if this is the desired path, can someone refer me to the pricing for the same, to have a better clarity.