C.R.S. § 30-11-513

Officers of a home rule county shall be appointed or elected as provided for in the charter; the terms of office and qualifications of such officers shall also be provided for in the charter; however, the duties of such officers shall be as provided by statute. The charter shall designate the officers who shall respectively perform the acts and duties required of county officers by statute. No elected official shall receive any increase or decrease in compensation under any resolution passed during the term for which he was elected.