The commission shall establish such committees as it deems advisable, in order that they may confer and formulate proposals concerning effective means to secure intergovernmental harmony, and may perform other functions for the commission in obedience to its decision. Subject to the approval of the commission, the member or members of each such committee shall be appointed by the chairperson of the commission. State officials or employees who are not members of the commission on interstate cooperation may be appointed as members of any such committee. The commission may provide such other rules as it considers appropriate concerning the membership and the functioning of any such committee.