Samsung Galaxy Alpha - Manual (Page 50)

Motions & usability features
50
Creating a Multi window combination
Use this feature to save the combination of the currently-running Multi window apps.
1
Launch two apps in a split-screen Multi window.
2
Open the Multi window tray and tap → Create.
The Multi window combination is added at the top of the Multi window tray.
To delete Multi window combinations, open the Multi window tray, tap → Edit, select a
Multi window combination, and then tap OK.
Adjusting the window size
Drag the circle between the app windows up or down to adjust the size of the windows.