When you have multiple cameras, select the default to use for your meetings. Virtual camera software, external webcams, and Webex App Room or Desk devices can be selected just like a built-in webcam. On mobile, you can switch between front and back-facing cameras and set virtual backgrounds.
Go to your profile picture and then choose Settings.
Click Video, choose the camera you'd like to use from the Camera drop-down list, and then click Save.
Go to your profile picture and then choose Preferences.
Click Video and then choose the camera you'd like to use from the Camera drop-down list.
Turn on hardware acceleration if you're having CPU issues when you're on a call or in a meeting.
While in a call or meeting, tap Video > Swap camera .
You must be using Chrome, Safari, or Firefox.
Click the activity menu and choose Meet. Select the device to use to make the call by clicking Audio / Video.