To create a contact without a reservation, follow the steps below:
In the main settings cogwheel, select Contacts in the bottom section of the menu.
Click on the Add Entry/"Plus" button in the upper-right corner.
You'll see the Create Contact form. Enter in all information as available.
If you have RV/Rig information ahead of time, you can click on the Rig tab across the top of the Edit Contact box, and enter the requisite information.
When all information is complete to your satisfaction, be sure to save!