Clicking the Registration Form button pops-up a registration form with all of the guest details filled out and ready for printing. You will need to customize this in Settings > Templates.
Fields that can be included in the registration form are:
Property name
Property hotel license number
Room name/number
Check-in and Check-out dates
Total room nights
Guest contact information
Additional guest information
Policies and waivers
You can also create write-in fields if you wish to further customize your registration form in Settings > Templates.