Our license policy allows for installation of the license on up to three different computers at any given time, so long as all of the systems are owned and operated by the person who owns the license.
Previously installed licenses can be uninstalled and installed once more on a new system. Remove a license from a system in the License window of the plugin.
If you are using multiple systems, you can run the license simultaneously without needing to change settings on the plugin licensing. No logging in and logging out and what not.
Licenses for use on any more than three systems requires an additional license.