I have created a new Material, for Ductwork (I am using Fabrication CADmep 2020), however I can not seem to make any piece of Duct the new Material. When I double click the piece of Duct and go to the Item tab, only Galvanized is optional. I have created the new material, so that I can alter it in Revit, so if there is a better way let me know, because I want the colors of the material to be exported when I export to Navisworks.