Will revisit a Navisworks book shortly.
What I'm hoping to find is an inventor model exported to dwf can be imported to navisworks an the BoM split over time.
Create a 4D build sequence:
Stage 1 at subcontractor 1 with Bom1 (quantification1)
Stage 2 at subcontractor 2 with Bom2 (quantification2)
will scour youtube presently.
Regards
Andrew