How can I create a custom form with custom input components?

I want to create a custom form and some custom form input components. Because I need custom design which some of the components like number components doesn’t have. How can I do those in plasmic studio. i am able to create textinput and number input component there but, I am unable to create a form which I can use for any supabase integration. I mean how to connect all with the form component so when it is connected with supabase, I will get the correct inputs.