Steps to enable ZOOM on MAC: 

If you do not allow Zoom access during this initial prompt of the camera, microphone, and remote control access it becomes disabled. You will need to go into your OS System Preferences to allow access. System Preferences – Security & Privacy – Privacy – CAMERA, MICROPHONE, SCREEN RECORDING and ACCESSIBILITY and then exit Zoom and re-enter. (Allow either the Zoom button or the Web Client ie Google Chrome button or Zoom Rooms depending on method of accessing Zoom). Due to increased security and permissions with Mac OS 10.14 Mojave and 10.15 Catalina, you will be prompted to authorize the Zoom desktop client and Zoom Rooms client to use the microphone and camera. On Mac OS 10.15 Catalina, screen recording will also need to be authorized. You will also be prompted to allow the Zoom desktop client to allow others to remotely control your desktop. You can click OK during the initial request and you will be able to use your microphone and camera in Zoom.   —–> 

1. Click the Apple logo at the top left corner of your screen.
2. Click System Preferences.
3. Click Security & Privacy.
4. Select the Privacy tab
5. Click the lock icon at the bottom left corner of the Security & Privacy window.
6. Enter your OS administrator username and password.
7. Click Unlock.
8. Click the permission that you need to change: Camera, Microphone, Screen Recording, Files and Folders or Accessibility.
9. Click the checkbox next to zoom.us and/or Zoom Rooms. Note: For Local Recording on Catalina, you need to click the checkbox for at least the Documents Folder option under zoom.us.
10. A window will appear asking you to restart Zoom or the Zoom Rooms application.
11. If you need to allow other permissions, click Later. Repeat steps 7 and 8 for any additional permissions you need to enable.
12. Once you’ve allowed all necessary permissions, click Quit Now.
13. Reopen Zoom or Zoom Rooms and you should now have full access.