12 Pa. Code § 11.5 – Appearance before the Department.

(a) An individual complainant or petitioner may appear on his own behalf. An authorized officer or employe of a local government unit may represent the local government unit before the Department.
(b) Representation of parties by an attorney is permitted as provided by 1 Pa. Code § 31.22 (relating to appearance by attorney).
(c) Subsection (a) supersedes 1 Pa. Code § 31.21 (relating to appearance in person).