Your Mac has its own inbuilt feature for remote sharing screen on Mac, especially with a VNC server with some additional features. So, you can use the VNC clients for controlling your Mac and these clients are available for all types of platforms. In order to enable and use this screen sharing feature you have to follow these steps.
Step 1. First, click on the Apple icon that is present in the menu bar at the top of the Mac screen. Then, select the system preferences and click Sharing.
Step 2. Select the screen sharing checkbox to for Mac remote screen sharing over Internet on your Mac.
Step 3. The control panel will inform you about another Mac desktop or device on the local network.
Step 4. Open the Finder window and look under the section named Shared in the sidebar.
Step 5. Now, select the computer that you want to control and click on the option Share Screen.
Step 6. In order to set some extra options for screen sharing, then click on the Computer Settings. You will get some options which you can check or uncheck according to your need.
Besides, you're free to try this great Mac app named ezTalks to share your screen while having a video conference.
2 Ways to Do Remote Screen Sharing on Mac