In an Echo Touch video Shawn Fernandez (ETC) remarked that you can control all house lights or certain stage lights from the Echo Touch with a fader. How do I go about this? ex. I have 7 circuits of house lights but would like a single fader to control ALL 7. Or a fader that has theatrical lights for a "rehearsal" look. I understand using a Preset with sACN but don't understand how to make a fader control more than 1 device. Thanks in advance!