In SBM 11.5, you can add User, Single Relational, and Multi-Relational fields as search facets by changing a configuration file setting. Note that adding these facets may negatively impact Work Center search performance.
A reindex is necessary for the Work Center Search Facets for the Application. Depending on the size of the table this reindex could take a while to complete. Whilst it is being run any new items added to the primary table cannot be found in a Work Center search.