You can allow other users to view your screen by using the Screenshare function. When you share your screen, the attendees of the call can view documents which you have opened on your own screen. 

Sharing your screen

  1. Move your cursor on the left side of the video conference window. A menu bar will slide open where you can see application icons.
  2. From the menu bar, select  Screenshare.
  3. From the opening window, select the screen or application you want to share.
  4. Select Start screen sharing.

You can stop screen sharing at any point you want by selecting Screenshare again.