Yes. You can and are encouraged to make forms with just a few fields, and let Zoominfo auto-fill the rest. When my client made the initial request I responded

Yes. You can and are encouraged to make forms with just a few fields, and let Zoominfo auto-fill the rest. When my client made the initial request I responded with "I don't know if that's possible OR legal" and then a couple weeks later they sent me Zoominfo welcome emails and asked to integrate into their web forms. FWIW, my clients' forms actually display the fields (none are hidden) so I at least can sleep a little better at night.