Hi Trevor,
Check out this version.
It has a mechanism to switch between Solo and Mute
Mute LED’s are toggle and yellow
Solo LED’s are radio/toggle and green
This is done with 3 global variables and 4 presets using a bitmap method. Switching between Solo and Mute presets updates the LED row for that selection and also turns on the appropriate selection LED (Solo or Mute)
I don’t send anything to the Application at this point as input and output are only set for LC XL device for LED feedback.
On project start or re-connect of the LCXL - Variables are re-initialzed to zero and we go into Mute Mode. Again I use LCXL factory template 1 for everything.
Solo-and-Mute-XL–2022-05-28.bmtp (4.8 KB)
This all goes way beyond free support but I’m feeling a bit generous today. 
Steve Caldwell
Bome Customer Care
Also available for paid consulting services: bome@sniz.biz