“Sidecar” is a MacOS Catalina feature that allows users to operate their iPad as a second display along with Mac. The same feature also permits the users of iPad Pro to work on their tablet through an “Apple Pencil” but the feature is only available on the latest editions of iPods and MacBooks. Luckily you can also use a third-party application known as “Duet,” if you have any older version of Mac or iPad. Duet allows users to use Sidecar over previous versions of Mac and creates a ...