1. A method for administering a session-based concurrent user licensing agreement on a manufacturing/process control information portal such that a single logon during a session persists across multiple distinct resources to which access is provided via a plant information portal server, the method comprising the steps: receiving, by the plant information portal server, an access request for a resource for which a license is required; invoking, based upon a code within a sequence of commands associated with the requested resource, a license manager associated with restricted resources associated with the plant information portal server, the license manager performing, for the purpose of granting, if needed, one of potentially multiple available session-based concurrent licenses, a set further steps including: first confirming that an identified source associated with the request needs a concurrent license; second confirming that a concurrent license is available to assign to the identified source; and adding the identified source to a list of session-based concurrent license users to which a session-based concurrent license is assigned.
15. The method of claim 1 further comprising maintaining a historical record of concurrent license usage information.