As directed in 20 ILCS 5/5-515, members of the Department's advisory groups shall serve without compensation, unless otherwise outlined in statute, except that members may be reimbursed for travel and per diem expenses necessary in connection with meetings and business, in accordance with the Department of Central Management Services rules, as approved by the Governor's Travel Control Board under 80 Ill. Adm. Code 3000, The Travel Regulation Council.