MIDI Target Manufacturer(s):
See the Image. One control (such as a foot pedal) can control multiple controls. The Off/On controls disable or enable the connection from the Supercontrol to the respective Subcontrol. They act as open/closed connections.
The use case is a single foot pedal is used to control multiple functions such as Pan, Modulation, and Multi-FX. A Button for each function will enable or disable the output from the function's knob. Thus one, two, or all can generate an output at the same time.
This seems like a natural extension of the Show/Hide panel, where each function knob is a member of a panel. An option for Hide would be to deactivate all members of the panel.
I am currently working on a solution using MidiFire to loopback the On/Off buttons to control SB Input Rules.