See link below for details on unassigned licenses https://communities.bentley.com/communities/other_communities/licensing_cloud_and_web_services/w/wiki/44008/practitioner-licensing#what-happens-if-left-unassigned

To assign a Practitioner license, please see the link below https://communities.bentley.com/communities/other_communities/licensing_cloud_and_web_services/w/wiki/44008/practitioner-licensing#how-do-i-assign