1. Select the Audio button to reveal a dropdown menu of audio settings.
2. Click on the Microphone source menu to drop down a set of microphone options.
3. Select the microphone source you’d like to use for your microphone.
4. Click on the Speaker source menu drop down a set of speaker options.
5. Select the speaker source you’d like to use.
6. Click anywhere outside the dial pad to close the Audio dropdown menu.