Dell SE2219HX Software User's Manual page 9

SE2219H/SE2219HX
If you are using multiple monitors in an array or matrix, Easy Arrange layout
can be applied across to all the monitors as one desktop. Select "Span
multiple monitors" to enable this feature. You need to align your monitors
properly to use it effectively.
SE2219H/SE2219HX
| 9
Organizing Windows with Easy Arrange