1. To enable Multi window, from the home screen, press the Menu key.
   
2. Tap Settings.
   
3. Tap My device.
   
4. Tap Display.
   
5. Tap Multi window.
   
6. To use Multi window, tap the Multi window tab.
   
7. Scroll up or down on the tray to view more apps.
   
8. Tap the desired app.
   
9. Tap another app to view both simultaneously.
   
10. The blue line around the window indicates the active app. Device keys will effect this app.
    
11. To resize the window, touch and drag the Blue dot between the windows.