Summary: Provide additional catagories for plumbing and mechanical families

Description: It is almost impossible to hide certain objects by catagory when they are all on the same catagory. Have to hide by object in the view and then they still show up in other discipline models.

Product and Feature: Revit MEP - MEP Family Contents/Components (Plumbing)

Submitted By: cdodds on 10/13/2020