It can be useful to see the volume automation data of a Sigma channel on top of the audio waveform that it is controlling.
Example: Snare drum track being sent to Sigma Channel 2.
1 - Set the DAW track assigned to Sigma Channel 2 to 'no output'
2 - Copy the audio from the Snare track to the Sigma Channel 2 track
This means that automation data will appear 'on top' of the audio waveform, providing a clear indication of where the automation changes occur in relation to the audio.