Installation for macOS
To install QuarkXPress CopyDesk for use with the appropriate macOS:
Disable any virus protection software. If you are concerned about a virus infecting your computer, run a virus check on the installer file, then disable your virus detection software.
Double-click on the installer dmg. Drag the QuarkXPress CopyDesk app (a single App bundle) to the "Applications" folder or to a directory of your choice.