With the release of macOS Catalina 10.15 Beta we get a sneak peek at “Sidecar” which allows users to use an iPad as a display. What I soon learned was that my 2013 MacBook Air was not supported.
I then came across the article on AppleInsider that showed us a command to allow Sidecar on a Un-Supported Mac. This video shows how it works in just a few seconds.
The command was originally posted by @stroughtonsmith