Secretary's Duties. The Secretary shall: Conduct a full, fair, and impartial hearing; Take action to avoid unnecessary delay in the disposition of the proceedings; and Maintain order. Secretary's Powers—General. The Secretary's authority to regulate the conduct of the proceedings includes the power to: Administer oaths and affirmations; Rule on offers of proof and receive relevant and material evidence; Rule on motions; Call and examine witnesses to insure a full and complete record; Limit unduly repetitious testimony and limit the time for presentations; Request parties to submit legal memoranda and proposed findings of fact and conclusions of law; Issue orders as necessary to secure procedural simplicity and administrative fairness and to eliminate unjustifiable expense and delay; Conduct the hearing in a manner suited to ascertain the facts and safeguard the parties' rights; and Impose appropriate sanctions for failure to abide by this subtitle or any order of the Secretary. Secretary's Powers—Prehearing Order. Whether or not a prehearing conference is held, the Secretary may issue a prehearing order to regulate the conduct of the proceedings. Sanctions. The sanctions authorized by this regulation include: Limiting the issues to be heard; Dismissing all or any part of the request for a hearing; or Entering an order on the merits against a party.