The governor is further authorized, subject to the approval of the state board of finance, to transfer, temporarily from one office, department or institution to another office, department or institution, such employees as in his judgment may be necessary or convenient at any time to further the economical and efficient conduct of the state government and without regard to the appropriation out of which such employee may be paid; provided, that the governor shall have the power to designate and employ a personnel director who shall assist him in the performance of the duties imposed upon the governor by the terms of this section.