The following privileges (on page 1) in N4 support the licensing feature:
Menu - Gate
Menu - Vessel
Menu - Rail
Menu - EDI
You must assign these privileges to appropriate user roles (on page 1) to enable them to view the corresponding top-level menus:
Gate
Vessel
Rail
EDI
The full list of privileges for N4 is in the Navis N4: Reference Guide and in the online help or on the Kaleris Community Portal.