Скачать или смотреть How To Share Desktop Screen in Facebook Messenger Rooms

First, sign in to the Web application of Messenger using your Facebook ID. The start a group video call by clicking on the video call option given on the top left corner beside the profile picture.
When you’re in your group video call session, simply click on the first icon given on the bottom of the video call screen, along with other options. From there, a pop-up window will let you choose which screen you want to share.
Once you choose the screen, then the shared screen will be visible where your video icon was visible before, on the bottom right corner of the video call screen.
To stop the screen sharing, simply hover your mouse over the shared screen window and it will show the sign to “stop”. Click on that option and you can then resume your normal group video call conversation.
That’s it guys this is how you can Share Screen on Facebook Messenger Room.