What Job Title Fits Someone Who Documents Every Employee's Role in Our Office?

We are looking for someone to type the document detailing each and every role of the employees in our office. Also, I would like to know the job title for that documentation person.

Your post is very ambiguous, and it is impossible to understand exactly what you are asking. If you are looking for a person to define the duties of each role in your organization and codify that into a job description document, then you may be better off outsourcing that task to a specialist HR consultant.

In the ordinary course of events, it is simply an 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.