BPO Files can be used directly by Architects, Interior Designers and MEP Engrineers. If you would like to use BPO files, then you can subscribe for using Revit, Archicad Importers and BPO Viewer. (The latest can convert BPO files to FBX, SketchUp SKP and DAE files.)
Subscription costs only €29+VAT/Year.
One subscription is connected to one specific Computer, you can read more about this here.
The process will be at follows: