IFC Types list

Under IFC tags there is a list of IFC Types. How can I add my own classifications to that list?

Hi Scott, the ifc Types are the standard ifc categories provided by the Building Smart (https://www.buildingsmart.org/) for physical products. However you can add custom information to geometry (VisualARQ and Rhino objects) with the custom parameters workflow. (You can watch it in this video: https://youtu.be/rdX7I79qTTI)
This information is also stored in IFC files, after exporting the model to IFC. You can create new Parameters from the Document Properties > Parameters. And assign information to geometry from the Parameters icon in the Properties Panel: