A Commissioner shall: Conduct a full, fair, and impartial hearing; Take action to avoid unnecessary delay in the disposition of the proceedings; and Maintain order. A Commissioner has the power to regulate the course of the hearing and the conduct of the parties and authorized representatives, including but not limited to, the power to: Administer oaths and affirmations; Issue subpoenas for witnesses and the production of evidence; Rule upon offers of proof and receive relevant and material evidence; Consider and rule upon motions and requests; Examine witnesses and call witnesses as necessary to ensure a full and complete record; Limit repetitious testimony and reasonably limit the time for presentations; Grant a continuance of a hearing; Issue orders as are 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 rights of the parties to the hearing; and Impose appropriate sanctions for the failure to abide by this chapter or any lawful order of the Commissioner.