Cal. Unemp. Ins. Code § 411

The appeals board, acting as a whole, may promulgate rules or amend or rescind rules pertaining to hearing appeals and other matters falling within its jurisdiction. All these rules, amendments thereto, or repeals thereof, shall be made in accordance with the provisions of Chapter 3.5 (commencing with Section 11340) of Part 1 of Division 3 of Title 2 of the Government Code.