Orientation | Using Audio: Mic Volume

Click the Talk button or use the hot key of Ctrl+F2 when you want to speak. The Talk button turns yellow while your audio is activated.
When you are done talking, click the Talk button or Ctrl+F2 to release your microphone. Remember to always release your microphone after talking so others can reply. By default, only one person can speak at a time. The moderator can increase it up to four simultaneous speakers.