Edgar Cervantes:

Split Screen View is one of the most helpful features found on the Samsung Galaxy Note 8, but we are not here to talk about this specific function. At least not directly. Instead we will show you a good way to take advantage of Split Screen View.
 Don’t want to fumble around apps every time you need to multi-task? It can be a hassle having to manually select which applications to use… every single time. You likely have favorite app combinations anyways, so Samsung has come up with App Pairing.