Change a Device Speaker or Mic

To choose the same device for both microphone and speaker use:

Step 1: Select the Additional Settings icon in the bottom left of portal to open a pop-up.

Step 2: Click on the Microphone icon.

Step 3: Select the devices from the options listed.  (This is pulled from windows)

To choose a microphone and speaker individually

Step 1: Click on the Settings icon on the left.

Step 2: Select the Audio Device option.

Step 3: Select the devices from the dropdowns of the microphone and speaker.