Pursuant to the provision of Section 5, rules shall be promulgated which establish a period between September 1 and November 30 during which all qualified organizations and United Funds shall be permitted to solicit State employees for voluntary contributions at their places of work. However, State and university employees hired at any time after the official 8-week campaign period may make voluntary contributions through payroll withholding. The informational materials from the immediately prior SECA campaign period may be provided to each such employee. No organization shall solicit State employees for contributions at their places of work, except pursuant to the provisions of this Act and the rules promulgated thereunder.