If you have used Facebook Live via a Desktop or Laptop recently, you may have noticed a new feature that has been a long time coming. You can now share your screen with your viewers without any third-party apps.
The new "Share Screen" button now appears once you enter the Live module on desktop. When you click on the Share Screen option for the first time, a pop up will ask if you want to add the "Facebook Screen Sharing" extension. After that, a module will appear asking if you want to share your entire screen or if you just want to share a specific tab or a specific application.
As far as how it works, you can't insert a video of yourself on the lower corners while you stream your screen, which is a downer. It also doesn't produce the clearest videos, but if you don't stream for a living anyway, the option looks good enough to use whenever you want to share with friends.