I'm looking for a way to create 2 leads with 1 form. Visitor submits their information along with their financial advisor's info and then we send both information about our products. So far I haven't figured out how to create a new lead based on the secondary (advisor) email address. Maybe not possible?

It's perfectly possible to do this with a single form, no webhooks or API calls.If you search the Community you'll (hopefully) find my recipe from maybe a year ago that shows how to submit a form twice, once for each email address field. If not let me know.