Clear fields on form submission

This may seem like a weird request and nobody else seems to have asked it in the WordPress forum.

I would love to be able to set a form to not refresh or redirect upon submission but just clear the fields. Or even just show a post submitted message and nothing else.

My specific use case is that I would like to use multiple forms on one page.

The main form includes a Relationship field made up of “People” custom post types. I’d like to have a secondary form on the side that can be used to add a “Person” post. That works fine if the main form hasn’t been started but if you refresh the page anything done in the main form is obviously lost.

I realize the new person wouldn’t show up in the box for the relationship field but it does show up with autocomplete without a refresh.

Right now I have a button that opens a separate page with the secondary form. I guess another option might be to make a multi step form with the name of the person first with the option to add a new person.

Thanks,
Evan