Section 12-107 - Waiver or extension of time limitations(a) The parties may agree to waive any time limitations specified in this title.(b) If the individual responsible to prepare a decision to a grievance at Step One or Step Two of the grievance procedure cannot respond within the time specified in this title because the individual is on approved leave for 3 or more days: (1) the period for the decision shall be extended by the number of days of the approved leave, up to a maximum of 14 days; and(2) the grievant shall be notified of the extension of time.