Split screen window solution on my Samsung 6S Edge Plus

[AC Question]

I read other Solutions about going into settings, and finding a multi-window toggle. Unable to find that, I continue to play with the phone and found that if I place my finger in the middle of the split screen for a few seconds I could actually move the window up and down thus creating a full screen. Split screen GONE. That's about the best information I can give you with my Samsung 6s Edge Plus