Representation or appearance of parties in all formal proceedings pending before the Commission shall be only by attorneys at law admitted to practice before the courts of this State, before the court of last resort of other states, or before the Supreme Court of the United States: Provided, however, That a party may appear for and represent himself, a partner may represent his partnership, and a corporation or association may be represented by a duly authorized executive officer thereof, upon permission granted in the discretion of the presiding Commissioner, Director, or other person authorized to conduct the hearing in any proceeding.
W. Va. Code R. § 171-2-20