Open the Channel Settings window by clicking the "e" symbol.
On the Audio Channel Settings window, go to the inserts column and switch the
view to routing.
Cancel the right bypass input by double clicking the grey area on the insert point
in the VST Audio channel settings window on the selected slot. This will open the Routing Editor Slot.
In the Routing Editor Slot, click the line on the right channel to "disconnect" it.
Waves Guitar Tool Rack User Guide.