Where a violation of this agreement is alleged by a part to, or persons bound by the agreement, or on whose behalf it was entered into concerning the agreement's content, meaning, application or violation, either party shall, within sixty (60) teaching days from the date on which the grievor became aware of the event giving rise to the alleged violation or difference, notify the other party, in writing, stating the alleged violation or difference and the solution sought. Where the Association is the grievor, this notice shall be given to the Superintendent and received on behalf of the Board. If a settlement is not reached within twenty (20) teaching days from the date of the notification, either party may request, in writing, that the matter be submitted to an arbitration board as herein prescribed. Within ten (10) teaching days of the written request to settle the difference by arbitration each party shall nominate an arbitrator and shall notify the other party of the appointment. These two arbitrators, within a further period of ten (10) teaching days after their appointment, shall meet to select a Chairperson. Should the two arbitrators fail to agree upon a Chairperson within the required ten (10) teaching days, either party may request the Manitoba Labour Board to appoint a Chairperson.