Multi-step form with validation

Hi

Trying to figure out if I can use Perch for project...

I know Perch Forms does both client side and server side validation.

1. Validation normally only happens when the submit button is pressed
2. but with a multi-step form the submit button won't be visible until the last step
3. Users will press next to proceed to the next step
4. I need a way to check if any required fields in the current step have been missed

Looking at the docs, I found a page about API Form validators, would this be a way to achieve the functionally I'm looking for?

Thanks