How to Snap Apps to the Side of the Screen in Xbox One
Xbox One allows you to run games and apps at the same time. For example, you can play a game, turn off its soundtrack and listen to music of your own while you play, with the Xbox Music app. Or, you can snap your favorite TV program and keep an eye on the current game and its score, while you play games. Here's how to snap apps on your Xbox One:
Open the game you want to play. Then, press the Home button on your controller to go to the Home dashboard.
The Snap an app list is displayed on the right side of the screen.
Select the app you want to snap and set the app to do whatever you want to.
Remember that, in order to use apps, you need an active Xbox Live Gold subscription. Otherwise you can't use them.
The game is now reloaded on the left side of the screen and the app you snapped is visible on the right, running in parallel.
To unsnap the app, press the Home button on your controller. In the Home dashboard select Unsnap and then return to the game you are playing.