MIDI Learn
You can use MIDI learn to map your MIDI controller to controls in Valves Pro. This enables you to control multiple parameters at the same time, and play them int real-time using knobs.
To map a knob on your MIDI controller to a control in Valves Pro:
Hold [command] + [shift] on your computer keyboard and click the control you want to assign the knob to.
Turn the knob on your MIDI controller.
The knob on your MIDI controller is mapped to the control in Valves Pro.