This tab enables the Consortium Administrator to maintain the set of categories that individual library administrators can choose from.

Each category is defined by a name and an identifier. The former is a human-readable string which will be displayed in the user interface as a guide for target selection. The latter is a short, unique, opaque string which is used internally for linking targets to the set of categories that they belong to.

The identifier of an existing category should not be changed unless you know exactly what you are doing. (In any case, there should be no need to do this, as identifiers are never seen by end-users when MasterKey is properly configured.)

Once some categories have been chosen for use -- either by selecting them from the available set or by adding them from scratch -- targets can be edited to associate them with one or more of those categories.