Your post is very ambiguous and it is impossible to understand exactly what it is you are asking.
If you are looking for a person to define the duties of each role in your organisation and codify that into a job description document, then you may be better to outsource that task to a specialist HR consultant.
In the ordinary course of events, it is simply a HR function, and would be done by one or more of the HR team members. There is no special designation for such a job as far as I am aware.
However, if you are seeking ISO 9002 Quality Management Certification, which requires this sort of documentation, then definitely that needs to be outsourced to a fully accredited ISO 9002 quality specialist.