To connect your PC to additional monitors:
Select "Extend these Displays" to extend your work surface or display to another monitor and extend work surface, allowing separate views on each monitor or screen.Extended desktop is useful for office applications. Note: once you open Display Settings, you will see monitors 1 and 2 (or 3) when monitors are connected ...make sure they are connected first. Next, select the monitor they want to extend the display to, before they change the setting and order for displaying monitors.
Once you select your display preference it will ask you to Keep Changes or Revert to previous settings.
Example: Extend Display
Example: Duplicate Display