I just did a write-up on programming some profiles, and how I handled temperature calibration & PID programming on my BrewZilla Gen4. It's been working great for me, and I've been quite pleased. Thought I'd share:
https://www.homebrewfinds.com/brewzilla-programming-tips-and-tricks/
https://www.homebrewfinds.com/brewzilla-programming-tips-and-tricks/