An Imperial Palace Chief Inspector shall, under the command of his superior, deal with the guard and fire-prevention matters and command and supervise Imperial Palace Inspectors, Imperial Palace Assistant Inspectors and Imperial Palace Guards. An Imperial Palace Chief Inspector, Imperial Palace Guard Official of 2nd class to whom the Ministerial Staff Treatment Rules are applied, shall be treated as being outside the authorized strength for Imperial Palace Chief Inspectors as defined in item 1 but as being within the authorized strength for Imperial Palace Inspectors as defined in item 1, Article 7.