how to use multi window in asus zenfone 5?
['Please go to Settings -> System -> Gestures -> Check whether "Swipe up on Home button" is on/off. If not yet turned on "Swipe up on Home button" : ... ', '1-3. While in one of the Apps, press and hold the APP icon.', '1-4. ... ', '1-5. ... ', '2-3. ... ', '2-4. ... ', '2-5. ... ', '3-2.']