The administrative judge of the circuit court shall appoint a clerk with responsibility for each circuit court site. In the interest of the effective administration of justice, any such clerk may have responsibility for one or more circuit court locations. Circuit court clerks shall have the same duties as clerks of the former district court and judicial branch family division and as registers of probate with the exception of RSA 15-B, RSA 456-B, RSA 548, RSA 653, RSA 655, and N.H. Rev. Stat. Chapter 661 which shall remain as duties of the registers of probate. Circuit court clerks shall hold office at the pleasure of the administrative judge of the circuit court.