Cal. Gov. Code § 69107
Upon the creation of a new court of appeal district or division, the Governor shall appoint pursuant to subdivision (d) of Section 16 of Article VI of the Constitution three or more persons to serve as judges thereof as provided in the legislation creating the district or division. The judges of said district or division elected at the first general election at which they had the right to become candidates shall so classify themselves by lot that the term of office for at least one of them expires at the end of four years, at least one of them at the end of eight years, and at least one of them at the end of 12 years, and entry of such classification shall be made in the minutes of said district or division, signed by each of the judges thereof, and a duplicate thereof filed in the office of the Secretary of State.
Ca. Gov. Code § 69107