Unless the terms of the will otherwise provide, when one or more persons nominated as co-representatives fail or refuse to qualify or accept appointment as personal representative, or when the appointment of one or more co-representatives is terminated as provided in §§ 29A-3-609 to 29A-3-612, inclusive, the representative or representatives appointed or remaining in office shall proceed to administer the estate and may exercise all of the powers incident to the office.
SDCL 29A-3-718