1. Click the up arrow next to the Mute icon to expand the Audio Settings menu.
Arrow next to the Mute icon
2. Select Switch to phone call.
Select Switch to phone call
3. On the Call me tab, enter the phone number of the device you would like to use. 
Enter the phone number of the device on the Call me tab
4. Click Call me.
The meeting window will continue to display on the original device, but your audio will switch to the new device. 
 
Note: If you join audio on another device within the same meeting, the audio will automatically disconnect from the original device to avoid echo.