In the configuration file under $CADENAS_DATA/datasetup/classystem.cfg, in the section of each classification, the creator of the classification can limit the classification possibility to projects, directories or catalogs via key TOCLASSIFY.

Examples:

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.