Is it possible to easily add more Furniture Categories. Reason for asking is I recently made some construction items such as Beams, Tubes and Trunking and it would be useful to add them to a category such as metals or maybe construction.

I hoped using the furniture library editor would allow the new items to be added to a new category but it only seems to list the original options when I added items to a new library I had made. I know you can use the keyword section to help with searching but ability to add new furniture categories would be useful.