The rules of evidence in all hearings under these regulations shall be as set forth in State Government Article, §§10-208 and 10-209, Annotated Code of Maryland. Any party may submit evidence, examine and cross-examine witnesses, and file objections, exceptions and motions. However, when a party is represented by counsel, all submission of evidence, examination and cross-examination of witnesses, and filing of objections, exceptions and motions shall be done and presented solely by the counsel. The presiding officer, or any person designated by him for the purpose, may examine any witness called by any party. He may call as a witness any person in attendance at the hearing. Any member of the Board may examine any witness called by any party.