Here's an incredible opportunity. Apparently, Evoluent mice can't seem to get their drivers to program their mouse buttons working on the latest macOS. They have five programmable buttons. Soooooo, I set these up hoping it would work with BetterTouchTool. This is on a M1 (Apple Silicon) MacBook Pro.
IT WORKS!
Somebody ought to contact Evoluent guys for this good news! All five buttons now work and now special kernel driver was needed to be installed (as their website kinda suggests with an old driver).