[SALESFORCE] Add Zoom Registrant via Contact creation/update trigger

I have a Cloud Page on my Marketing Cloud and when someone fill out a specific form, I’m syncing this to a Contact to Salesforce with some extra parameters.
Based on these parameters, I created a rule that needs to send the specific contact to that specific Zoom Webinar (we have the Webinar Id on it) and IDK how to trigger the Zoom webinar subscription

I can see the VF Page (ContactAdd2Webinar) has an Controller(Add2WebinarController) that does it, but I don’t know what parameters to send on those functions - registerToWebinar() and registerAndApproveToWebinar()

is there a way to send a webinar registrant submission any other way rather than clicking it one by one? (assuming this functionality already exists in Salesforce Zoom package)