You can customize the Additional Rooms field on the Create Key to populate the Additional Rooms field with the room numbers that were selected when a new key is created for that reservation and room number. This applies to duplicate keys (when Previous Keys Made > 0).
Prerequisites/Conditions
Allow Multiple Room Selection for Keys check box is selected in the Property Interfaces Configuration for DLS (Door Lock System).
OPERA Task Customize Chain or Customize Property in the General - Access Options.
Customization must be on for Property / Hub level — Main Menu – Settings – Customization, select Property/Hub Level.
Parent topic: Enhanced Room Key Generation