Change display settings with your monitor

To change how your displays appear,

right-click your mouse on your desktop (not touching any icons) a menu will appear.

Choose display settings from the menu, the display screen will be opened (as shown in the attached picture)

Click Identity to show the number of the screens attached.

Scroll down to multiple displays and click on the down arrow

You will see the different options that you can choose how you want your screens to display, extended, duplicate, etc.

Close the display settings window when finished.