Originally Posted by BarryH_GEG
Yep. I use it all the time. Just highlight what you want to move from one window to another and then long press it with S Pen or your mouse and drag it to the other window. Both apps have to support drag-and-drop but not all do. Most of Samsung's apps and those they include (EG: Hancom) do.
Totally unrelated to my question, but since the update, I cannot believe how much smoother these two are when both are running in multiwindow. For my A&P II class I also have HShow 2014 open and the three of them all run silky smooth.
Edit: So sorry, forgot I posted this in the 2014 forum. Disregard the above as it is about the 12.2 update.