16 Pa.C.S. § 14102
(b) Reconfiguration.—
(j) Offices not held.—
(1) A county in which the offices under this chapter are not held that seeks to provide for the holding of two or more of the offices by the same individual may, at any time:
(k) Proceedings.— The proceedings for a county to accept the provisions of this section regarding the county's offices shall be in accordance with section 14103 (relating to separate judicial districts) as applicable. Upon the expiration of the term of a county officer affected by the proceeding, the following apply: