The superintendent of each institution and division of the Department shall make such special rules as may be needed, subject to the approval of the Director. The provisions of the Illinois Administrative Procedure Act are hereby expressly adopted and shall apply to all administrative rules and procedures of the Department of Children and Family Services under this Act, except that Section 5-35 of the Illinois Administrative Procedure Act relating to procedures for rule-making does not apply to the adoption of any rule required by federal law in connection with which the Department is precluded by law from exercising any discretion.