Sharing your screen

To share your screen, during a meeting session:

  2. When you screen share, you use browser specific interfaces.
    On the Share your screen permission window, select one of the following:

    • Your Entire Screen (in Chrome, Firefox, Safari (13+), or Edge)
    • Application Window (in Chrome)
    • Chrome Tab (in Chrome)

    Important: If you are using MacOS Catalina or later, you have to give permission to your browser to record your screen. See: Control access to screen recording on Mac.

  3. Select the appropriate screen to share.
  4. Click Share
  5. Challo notifies you at the bottom of the screen that you are sharing.
    • To hide the notification, click Hide


  • Only one person can share their screen at a time.
  • Chrome and Firefox need permission to access you camera to be able to share you screen.
  • You can only share your screen if you are using Firefox, Chrome, Safari (13+) or Edge. You can only share your application when you are using Chrome. Participants who are using any other browser cannot share their screen, but they can view a screen shared by another participant.
  • Safari (13+) only shares the desktop on which the Safari window is open; you may need to move an application that you want to share to the Safari screen.
  • If your screen share includes your Challo meeting, a receding set of nested screen images is displayed; this can be confusing for your meeting participants—consider minimizing your browser, or moving to another tab, if appropriate.
  • It may not be possible to share applications that use Chrome or Chromium libraries, other than Chrome itself.

To stop sharing, either:

  • If the notification bar is at the bottom of screen, click Stop Sharing

Viewing a shared screen, including zoom and pan:

  • By default, Challo displays the shared screen in your Challo browser window.
  • To enlarge the Challo meeting display, including the shared screen, click Fullscreen.
  • To zoom in so that you can see an area of the shared screen in greater detail, double-click on the shared screen, then drag the pan tool to move around the zoomed in image, then use the mouse or trackpad to zoom in or out further: