(a) When any attorney who is not admitted to the practice of law in Illinois by unlimited or conditional admission, but who is licensed in another state, territory, or commonwealth of the United States, the District of Columbia, or a foreign country may desire to appear before a hearing officer, administrative law judge, or other adjudicatory officer or body of a department, such attorney shall be allowed to appear before the same as provided in Illinois Supreme Court Rule 707.
     (b) Subject to the rulemaking provisions of the Illinois Administrative Procedure Act, each department may adopt rules to implement and administer this Section.