5 U.S.C. § 5113

1. (1)prescribe the form in which each agency shall record the duties and responsibilities of positions and the places where these records shall be maintained;
2. (2)examine these or other pertinent records of the agency; and
3. (3)interview employees of the agency who have knowledge of the duties and responsibilities of positions and information as to the reasons for placing a position in a class or grade.