The Supreme Court of Appeals is authorized to create additional classifications of support staff that it deems necessary to adequately and efficiently staff the magistrate courts of this state, including, but not limited to cashiers, data entry clerks, and deputy magistrate assistants. The Supreme Court of Appeals may determine the authority to hire and terminate, supervise, and assign job duties for these positions pursuant to its own employment rules, policies, and procedures. The annual salary of additional support staff authorized by this section shall not exceed the regular annual salary of a magistrate assistant and shall be paid by the state on the same basis and in the same amounts established for magistrate assistants in each county, as provided in § 50-1-9 of this code.