group material at plant level

Hi all,

I need to group materials at plant level but the field "material group" does not work for my scenario because it is at material level, so i need to know what option i have to group material by this way and then be able to list them in a inventory tcode like mb52.

Example.

I have the material "engine" and i need to group it by the location in plant it is used like "feeder" and additional it belong to the "mill" so there are two groupers.

Thanks a lot,

Jorge G