A license is consumed as soon as a user logs in and a session is created. Please note that a license is not only consumed when a user starts working, like creating models in ARIS Connect or administrating processes. If various licenses are assigned to a user, the license with the higher value is consumed first.
Example
User A is assigned to the licenses ARIS Connect Viewer and ARIS Connect Designer (both Concurrent user license type). As soon he logs in, the ARIS Connect Designer license is consumed.