There are four display modes available in Windows 10, which can be quickly accessed by hitting Windows + P. This will bring up a sidebar with four options. Depending on whether you're on a laptop or desktop PC, either Extend or Duplicate will be selected by default. Here's a quick rundown on the differences between each option:
- PC screen only — Only the primary monitor is used.
- Duplicate — Secondary monitor shows duplicate desktop.
- Extend — Both monitors combine to offer an extended desktop.
- Second screen only — Only the secondary monitor is used.
Customizing displays and how they are managed by Windows is easy. But in order to do it, you need to gain access to the display section of the control panel.
- Right-click anywhere on the desktop.
- Click Display settings.
Click Identify to show numbers on corresponding displays. (1 is the primary.)
- Rearrange displays by clicking and dragging the numbered boxes.
- Use the scaling slider to make text and other content larger. (This is ideal for higher resolutions or for people with impaired vision.)
Choose between landscape or portrait to change the selected display orientation.
"Some source material taken from windowscentral.com" - https://www.windowscentral.com/how-connect-and-set-multiple-monitors-windows-10