W. Va. Code § 29A-3-3: Rules of procedure required.

In addition to other rule-making requirements imposed by law:

(a) Each agency shall adopt procedural rules governing the formal and informal procedures prescribed or authorized by this chapter. Procedural rules shall include rules of practice before the agency, together with forms and instructions.

(b) To assist interested persons dealing with it, each agency, shall so far as deemed practicable, supplement its rules or regulations with descriptive statements of its procedures.