MUTE GROUP IN JJOS 3.08

So, i have an mpc1000 with jjos 3.08 and i been watching a lot of videos but anybody seems to use jjos 3.08 and i cant understand how to make mute groups its driving me crazt if anyone can help please do it thank you

Program mode -> params

JJOS 3.08 is very similar to the original Akai OS, so having a copy of the original manual might be useful:

https://www.akaipro.com/amfile/file/dow ... roduct/73/

Explanation of the extra JJOS features:

http://www7a.biglobe.ne.jp/~mpc1000/version3e.htm