If the ACCL policy is set, the system administrator can assign an access level to particular users and groups of users. Generally, full access is allowed unless the current user or group has a lower access level assigned. Access levels range from 0 to 8, where 8 allows full access, 1 allows minimum access, and 0 allows access to no software, and no license can be issued.
ACCL policy must be set otherwise all users will have full access.
LispWorks Guide to the License Server - 16 Feb 2015