Yes, screen sharing is possible in marimba.
Screen sharing feature was added on the board based on continuous user feedback during beta testing period.
First you need to start a video call You can start video call by clicking the video call button in the upper right corner of the board.
After the video call starts, if you mouse over your own video at the bottom, you will see a screen sharing button on the right, and you can start sharing your screen right away by clicking this button.
(여기에 권한 허용 안내 팝업)
Check out Screen Sharing for more information.