Plumbing Catalog Data - Add Field

Hi,

I already created catalogs for a local manufacturer from Brasil for plumbing(reducers caps, tubes...), but now I need to include additional data to itens.

For example, whem an elbow is inserted, I need that the hours of  the worker to be informed, as well as other itens like rubber ring, glue...

Where I can find any literature about adding this information?

AECOSim - 08.11.09.376