How To Make A Background On Zoom Without A Green Screen. MacOS 1013 or later. According to the Zoom support page the virtual backgrounds work best with a green screen and uniform lighting.
In the Meeting tab navigate to the Virtual Background option under the In Meeting Advanced section and verify that the setting is enabled. When the green screen option is enabled you will also get the option to use a colour picker to force Zoom to identify a specific shade it needs to replace with the virtual background. Supported processors 2 cores 2Ghz or higher i5i7 or AMD equivalent processor.
This was an update I installed on May 20 2019.
In the navigation menu click Account Management then Account Settings. This was all about how you can use a green screen with Zoom to change your Zoom call background. Open up your Zoom client. Image only with a physical green screen.