How to Use Apple TV
Mirror or extend your Mac display
With Apple TV or an AirPlay 2-compatible smart TV, you can mirror the entire display of your Mac to your TV or use your TV as a separate display.
ConnectyourClick
MacControltoCenterthe same Wi-Fi network as your Apple TV or AirPlay 2-compatible smart TV.On your Mac, click in the menu bar at the top of your screen. If you don't see , go to Apple menu > System Preferences > Displays, then select "Show mirroring optionsin the menu barwheninavailable."the Choosetop right of your Macbook, click the Screen Mirroring icon , then choose your AppleTVTV.
orAirPlay 2-compatible smart TV.Need help?-
If
an AirPlay passcode appears on your TV screen,asked, entertheapasscodefour-digit code on your Mac.
Change settings or stop mirroring
To changeset the size ofwhether your desktop mirroredmirrors onor extends your TV,Mac click inscreen, click the menuScreen bar.Mirroring Thenicon select, then choose Mirror Built-in Display to match the size of your desktop or Mirror Apple TV to match the size of your TV.
AirPlay also lets you use your TV as a separate display for your Mac. Just click in the menu bar, then select Use As Separate Display.
To
Learn more about mirroring or extending the display of your Mac.