18- 185 C.M.R. ch. 110, § 2
Any person may appear before the Commission in his or her own behalf, or by an attorney authorized to practice law in this State. In unusual or extraordinary circumstances a person may designate by written authorization a disinterested representative to act on his or her behalf. Non-attorney representation may be permitted at the discretion of the Commission, providing that the rules and regulations and legal procedures are otherwise complied with. An attorney from another jurisdiction, in good standing there, may at the discretion of the Commission be permitted to participate in proceedings before the Commission. Nothing in this rule shall be interpreted in such a way as to permit the unauthorized practice of law; nor shall this rule in any way be construed to restrict or limit the right of any person to conduct his or her own business with or before the Commission.
18- 185 C.M.R. ch. 110, § 2