I have the option toggled on and have a button assigned to my microphone toggle. How/when do I actually use it though?

@Hatsodoom voice chat should automatically be in use whenever you are in an expedition. It will transmit to any party members in your group by default, unless you mute it or disable voice chat.

Yah that didn't work...

If it turns orange when talking, it SHOULD be transmitting, but apparently there have been issues with other people not being able to hear you, and vice versa, due to it being too quiet. IDK how to fix that unfortunately. So if it turns orange, it should be working.

have to go in your settings and turn mic vol up