You create input forms that determine how Verification (or Web Verification) works and what it looks like when you verify a specific document type.
There are different types of forms: one type for the Verification client and another (web forms) for the Web Verification client. Web forms are more limited. They have fewer options and cannot be customized as freely.
A form can contain several panels, which are collections of different controls.
For more information, see:
Adding a form panel (not web forms)
Arranging form panels (not web forms)