I also need to add : The member/guest listed in the top left box has the A light up means He/She has just Audio working , A&V lit up means they have both working , if nothing is showing , means you will have to type to them in the type area , next to the "Style" above the ME box .
Its not real hard once you get the grasp of it all .
I will mention again , if you use a mic & PC speakers most will get an eery echo using a headset .
I use a Mac laptop with a built in webcam & a cheap playtronics headset with built-in-mic ($30) , works well .