If you set out your layout correct with the same channel numbers then yes just use the mouse to select the units or use the keypad as you would usually,
But remeber you can only access this from the Live Tab, Press format in live until you see you channel layout screen.
Hope this Helps
Carlos
Carl Knapper Chief Crewe Lyceum Theatre Crewe http://www.lyceumtheatre.net/ 07736445790 carl@cbkproduction.co.uk www.cbkproduction.co.uk