Setup is easy, download the Mac app from here and install it. Then go to the App Store and get the Duet app. After they are installed, run them both and plug your iPad into your Mac. Your iPad will now connect and say, "Launching Duet". It does not take long for it to fully connect and become another display.
This app is the best app of its kind, as it can be used on older iPads as well. Not only can you use your new(er) iPad, but you can also give new life to your old one.
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