Submission form redirects to download a file (custom destinations)

Hi! Beyond appreciation as always for phplist, thank you :tulip:

Trying to wrap my head around the following:

I would like to have a form (or forms) that visitors fill in, and on submission redirects to a page or where they can download a file.

Now there are going to be several files available, so I guess many forms.

But how do they get redirected to the custom destination?

Would you be so kind to point me in the right direction please?