You can find more information here.
I am happy to see that the new CMB ModelBuilder 22.04 has been released!
This is the first time that I have used this software and it has been a very pleasant experience. A big thank you to everyone who worked on this project for making it so easy to use and for making it available for free!
I look forward to using this software more in the future and contributing my findings here on the forum as well as on GitHub (where I will be posting my code).