Customizing the Additional Rooms Field

1. Go to Miscellaneous - Property Interface Control.
2. Choose a reservation and click Create Key.
3. Select the Customize link.
4. Click the pencil icon next to the Additional Rooms field.
5. In the Basic tab, select the </> Custom Validator icon next to the Default Value field.
6. In the Expression Builder screen from the Available Fields search, select the PreviousKeyAdditionalRooms binding:
   (Name) PreviousKeyAdditionalRooms
   (Description) #(bindings.PreviousKeyAdditionalRooms.inputValue)
7. Click Evaluate, and then click Apply.
8. Click Save, and then Close Customize.

With this customization, the Additional Rooms field populates with all additional rooms associated with the reservation room when the previous key was created (Previous Keys Made > 0).

After the Additional Rooms functionality is customized, when a new key is created with additional rooms selected, the additional rooms are logged and saved with the main room key information. This is per reservation and room.