Hi Kelly!
Please note this forum is for API Developers. For support questions, it'd be best that you reach out to our Customer Support team: www.eventbrite.com/support/contact-us
I will say, this is not possible to do, as registration must take place through Eventbrite for events ticketed on the platform. You may find it helpful to customize your order form to meet your registration needs instead!
Best,
Natalie