The Audio Mixer window displays an arrangement of four Audio Groups. Each Audio Group has its own set of three buttons marked S, M, and B for soloing, muting, and bypassing the group respectively.
Properties
Property:
Function:
S Button
Soloing the group.
M Button
Muting the group.
B Button
Bypassing all the effects in the group.
When you select Add you can select from a list of effects that can be applied to the group.
The list of effects that can be applied to an Audio Group from the group’s Add button.