EDITING MIXER SUBCHANNEL NAMES

hey folks

i want to change the subchannel names for the mixer.

for example - ive changed the 'distortion' sound of the guitar to 'nylon' string - and it sounds right when i pick 'distortion' in the drop down under staff/text properties. but i would rather that subchannel and the mixer subchannel reflect the new sound rather than 'distortion'

how can i edit that?

thanks