70Figure7-30Clickor.Step 2The system displays“RoomConfig”, asshown inFigure7-31.The displayed room no. is the added VTH.To add VTH, please referto“7.8.1AddVTH”.Click to modify the bonded buttons when necessary.Figure7-31Select room no. and click“OK”.Step 3The interface displays room no. info and corresponding button turns green, as shown inFigure7-32.