1. Press the < under the main fader to bring up the quick panel.
2. Press the Mutes button. This brings up the mutegroups menu.
3. Select the channels you want to be in a particular mute group.
4. Press the Save button at the top of UC. Mute group buttons 1-8 will begin to flash.
5. Select a mute group. It will highlight.
6. When pressed again, the mute group selected will unhighlight and the selected channels will unmute.
See the UC Surface Reference Manual, section 7.2 for more details.