Respondents may be represented by counsel at all stages in Board proceedings. Counsel shall file with the Board Office a written notice of such appearance, which shall state counsel’s name, address and telephone number, the name and address of respondent on whose behalf counsel appears, and the caption and docket number of the subject proceeding. Any notice or other written communication required to be served on or furnished to respondent may be sent to the counsel of record for respondent at the stated address of the counsel in lieu of transmission to respondent. If respondent is represented by more than one counsel, notice to one shall be sufficient. Counsel may be appointed for respondent by the Chair of the Board upon motion by respondent accompanied by an affidavit of indigency executed by respondent.