That is pretty cool, like a stfu mode where it wont bother you with voice or screen switching.
If you have a modded ig3 you may or may not see the volume mute indicator. Its still there, but if your map is black (like mine) you wont see it.
Here is a RR button i whipped up that will turn it on and off , has a label that will show the status of it also so you can stick it on any screen to know if its on or not. Good if you still want to hear voice but turn auto switching on/off
"BYVAR;igautosw;=AUTOSWITCH OFF<<=AUTOSWITCH ON"