Duplicate and extend
From IT Public Wiki
Duplicate Screens
In Duplicate mode Windows displays the same content on both Podium PC screen and the Projector screen.
- Use the keyboard shortcut Win+P (you need to hold the Windows key down and press P.
- Click on Duplicate
Extend Screens
In Extend mode Windows uses the Projector screen as a second screen (e.g. it's like having two monitors). It accomplishes this by "Extending" the desktop from the Podium PC to Projector screen.
Note: In Extend the projector screen will be black when the podium PC is at the lock screen (aka login screen) just as it is in a dual monitor setup.
- Use the keyboard shortcut Win+P
- Click on Extend