A database may be licensed with two license types that give users contradictory rights.
For example, your organization might have one group of users that only needs to view engineering drawings and another that needs the ability to view and markup those drawings, so your database must be licensed with both CAD Services - View & Markup and CAD Services - View Only licenses.
In order to determine which license should be assigned to each User Group, the User Group must be assigned a License Affinity. The License Affinity determines which license should be used for users in a User Group when there is more than one license could logically be used. If that pre-determined license is not available, then the other license type would be used.
If a user is assigned to more than one User Group and the User Groups have conflicting License Affinity settings, the settings affiliated with the user's primary User Group are used.
License Affinity only applies to concurrent licenses; a workstation or a named user license takes precedence over a concurrent license and the assigned License Affinity.
To assign License Affinity for a User Group.