is titled "Information management using building information modelling (BIM) -- Part 6: Effective collaborative working".
Here's what I found:
You're looking for a free PDF download of ISO 19650-6. iso 19650-6 pdf free download
ISO 19650 is an international standard for information management using Building Information Modelling (BIM). It provides a framework for the management of information throughout the lifecycle of a built asset. iso 19650-6 pdf free download