In any disposition hearing the following persons may enter an appearance:
Any person appearing before the Board other than on his or her own behalf may be required by the Board to establish his or her authority to act in that capacity.
A person appearing before the Board at a disposition hearing shall have the right to be represented by an attorney admitted to practice before the District of Columbia Court of Appeals, or who is admitted to practice before the highest court of any State and not barred from practice in the courts of the District of Columbia.
An attorney appearing as counsel for a person shall certify his or her qualifications to appear before the Board. Unless certification of qualifications is made, an attorney shall not be permitted to appear as counsel for another person except with the specific permission of the presiding officer.
Each party to a public hearing shall be represented by a person or persons authorized to testify to all relevant aspects of that party's interest in the matter and fully conversant with the particulars of that interest.
D.C. Mun. Regs. tit. 10, r. 10-B2011