1. Open the two apps which you want to use in split screen, 2. Open the recent apps tray and click on the recently used app icons, 3. If that app can be used for Split screen you'll see an option named 'Split Screen'. 4. Click it and enjoy!
Just click on recent apps and here you will gonna see all your open apps click on small icon at the center of open apps you will find an option of multi window(apps supporting this feature)
