You can access 'Rates and Rules (Setup)' from the Main Menu on NightsBridge.
Go to the Main menu
Move your cursor to the menu icon (as indicated by the arrow) and click to expand the Main Menu.
Access the Rates & Rules (Setup)
Click 'Rates & Rules (Setup)'.
Alternatively, click on the gear icon on the side bar to access the Rates & Rules (Setup).
The Rates & Rules (Setup) will open: