1.241—Designation of presiding officer.

(a) Hearings will be conducted by the Commission, by one or more commissioners, or by a law judge designated pursuant to section 11 of the Administrative Procedure Act. If a presiding officer becomes unavailable to the Commission prior to the taking of testimony another presiding officer will be designated.
(b) Unless the Commission determines that due and timely execution of its functions requires otherwise, presiding officers shall be designated, and notice thereof released to the public, at least 10 days prior to the date set for hearing.

Code of Federal Regulations

( 5 U.S.C. 556 )