The license is released when the user session ends.
It is a so called floating license since any end user PC with a connection to the server can obtain a license. A license server manages the licenses for a particular number of users connected to the server. A license that is locked to a particular PC using a hardware identification system. This is a 30 - day license that is included with the software. Geocap for ArcGIS offers three different license models.
The entries for managing the license can be found under the Help entry on the 3D Explorer toolbar. Click the Help button to see the entries in the menu: To install the license file the toolbar for the 3D Explorer must be enabled. The extensions Seismic Explorer and Maritime Delimitation includes the 3D Explorer and uses then the same toolbar for help. This documentation assumes basic familiarity with ArcMap. Geocap for ArcGIS requires ArcMap 10 with licensing level of Basic or higher. This section describes how to configure this licensing system for your Geocap software. The official user documentation can be found here. Geocap uses licensing software from Gemalto.
