Hi, I need some help brainstorming the best way to do this. There's probably a common developer term for what I'm describing but with a design background, I'm at a loss...

What needs to happen: take payment for an event listing and then have the person posting the event fill out the information themselves and have this info automatically posted to it's own sub-page, which also appears in a page-list on a central event page?

One thought was have them make payment using paypal, that directs them to a form page upon completion. But then, how do I get the form to add a sub-page and populate it?

Or is there a better way?

Many thanks in advance!