Miracast Steps on Windows 10
To wireless display your screen
Swipe in from the right edge of the screen, and then tap Connection.
(If you’re using a mouse, point to the lower-right corner of the screen, move the mouse pointer up, and then click Connection.) or you can type Ctrl + k.
It will find all the miracast receiver devices, and then tap or click the device of wireless display you want.
To choose what you see on each screen
Tap or click Project, and then choose one of these options:
PC screen only. You’ll see everything on your PC. (When you’re connected to a wireless projector, this option changes to Disconnect.)
Duplicate. You’ll see the same things on both screens.
Extend. You’ll see everything spread over both screens, and you can drag and move items between the two.
Second screen only. You’ll see everything on the connected screen. Your other screen will be blank.