Use All Displays in Full Screen View

You can set
Fusion
Full Screen view to use all of the displays attached to your Mac.
  1. Select
    View
    Use All Displays in Full Screen
    if
    Use Single Display in Full Screen Mode
    is enabled.
    Use All Displays in Full Screen
    is not supported for Mac OS X guests.
  2. Select
    View
    Full Screen
    if you are in another view.