A single-user license of QuarkXPress allows you to install and use the software on one computer at a time. If you install a single-user copy of QuarkXPress on more than one computer, an error message will display, and all but one copy of the software will be disabled.
If you require a QuarkXPress license for more than one computer, you must purchase a copy for each computer on which you want to run QuarkXPress. Or, you can install your single-user license of QuarkXPress 6 on a secondary computer that you own through Quark dual licensing. Quark dual licensing is available only to the primary, registered user of a QuarkXPress single-user software license. Quark dual licensing permits non-concurrent use of QuarkXPress on two computers, which must be the same platform.
Alternatively, you can purchase a QuarkXPress Multi-Pak (minimum of 5 licenses of QuarkXPress configured to run with one serial number). If your QuarkXPress software is part of a multi-seat installation, Quark? License Administrator (QLA) will manage your licenses.