In the configuration file under $CADENAS_DATA/datasetup/classystem.cfgin the block of the respective classification, the creator of the classification can limit the classification option to individual projects, directories or catalogs using the key TOCLASSIFY.
TOCLASSIFY=CAT TOCLASSIFY=DIR TOCLASSIFY=PRJ TOCLASSIFY=CAT,DIR
If, for example, "TOCLASSIFY=CAT" is set, then only the catalog as a whole can be classified with the respective classification. Directories or single projects cannot be classified.