How do I enable audio and video for appointments?

To enable audio and video, reference the below instructions (depending on which type of smartphone you have). 

For Apple Devices: https://support.apple.com/guide/iphone/control-access-to-hardware-features-iph168c4bbd5/ios

For Android Devices: https://support.google.com/chrome/answer/2693767?hl=en&co=GENIE.Platform%3DAndroid