The superintendent of each institute must be qualified by experience and training in the administration of human service programs. A physician shall not serve as both superintendent and business manager. A hospital administrator or other person qualified in business management appointed superintendent may also be designated to perform the duties of business manager without additional compensation. A physician appointed superintendent shall be designated clinical director and shall perform the duties imposed on the superintendent by section 226.6, subsection 1 , and such other duties of the superintendent as must by their nature be performed by a physician. [R60, §1430, 1474; C73, §1386, 1391; C97, §2255, 2258; C24, 27, 31, 35, 39, § 3484; C46, 50, 54, 58, 62, 66, 71, 73, 75, 77, 79, 81, §226.2 ; 81 Acts, ch 79, §1 ]