In Rhino, use the Panel to assign the following properties to Rhino objects:
Family - The Family that owns the object. Objects in blocks are always assigned to the block Family.
Subcategory - Revit Subcategory of the geometry. This property is not available for System Families.
Material - Material to apply to the geometry. This is always the Rhino Material assigned to the object.
Data - Extra metadata visible only in Dynamo.
Selecting suitable objects will activate the Panel. Type values in the Parameter fields to assign the property to one or more geometries. Press Enter to apply.
When importing in Revit, BEAM will use Subcategories and Materials in the Revit Document. If a Subcategory or Material does not exist, it will be created.