When you are in the meeting, click the lock icon located on the upper left corner if you are using Google Chrome. For Safari, click Safari then Settings for This Website. Click the drop-down menu for Camera and Microphone and select Allow.
When you are outside the meeting, open Google Chrome then click Chrome Menu (vertical ellipsis) located at upper right corner. Click Settings then Site Settings. Under permissions, click Camera or Microphone. Unified Meeting X URL will be listed under blocked. Click the arrow beside the Unified Meeting X site then change the Camera and Microphone permissions to Allow.
For Safari users, open Safari. Click Safari then Preferences. In the website tab, click Camera or Microphone. Beside the Unified Meeting X or Unified Meeting X URL, select Allow from the drop-down menu.