If you're doing a single cuelist show you can unblock the whole list then get rid of zero values in your first cue. Check the contents (view cue) at the last cue of the list. Select all the channels in your rig and see which don't have a value. Voila, unused channels.
If you're doing a single cuelist show you can unblock the whole list then get rid of zero values in your first cue. Check the contents (view cue) at the last cue of the list. Select all the channels in your rig and see which don't have a value. Voila, unused channels.