Section "Monitor"
    Identifier "LeftBenQ"
    Option "Preferred Mode" "1920x1080_60"
    Option "Primary" "true"
    #Option "Rotate" "Left"
EndSection

Section "Monitor"
    Identifier "RightBenQ"
    #Option "Rotate" "Left"
    Option "Preferred Mode" "1920x1080_60"
    Option "RightOf " "LeftBengQ"
EndSection