Dell U2415 Monitor - Manual (Page 3)

Dell Display Manager User's Guide | 3
You can also configure the Game preset mode to be used whenever a Direct3D
application runs in full-screen mode. To prevent an application from using mode, assign
a different preset mode to it.
Easy Arrange Your Monitor Window Layout
On supported Dell monitors, the Easy Arrange tab allows you to easily arrange the open
windows in one of the predefined layouts by dragging them in the zones. To create a
custom layout, arrange the open windows and then click Save.