(2) A sheriff may also, by special written appointment, authorize any other person to do any particular act. A certified copy of such appointment shall be filed with the county clerk, unless indorsed upon the process, order or other paper so authorized to be served or executed.
(3) A deputy has the power to perform any act or duty that the principal has, and a person specially appointed to do a particular act has the same power in relation to the particular act authorized. The principal is responsible for the conduct of such deputy or person specially appointed except as provided in subsection (4) of this section.
(4) In counties having a civil service system covering deputy sheriffs, the sheriff shall not be responsible for the conduct of deputy sheriffs or persons specially appointed as provided in subsection (2) of this section. [Amended by 1963 c.331 §12]