# Primary Class

RIB uses objects from the primary class to populate your catalog by default. Objects from this class will be categorized by the value(s) of their primary attribute and alphabetized by their Name attribute.

The "Change" button for the primary class is located under the "Manage Catalog" tab. Note that changing the primary class will cause any remote objects currently linked into the catalog as a result of interoperation to disappear. Remote objects from the new primary class (if there are any) will be linked into the catalog the next time interoperations are updated.