18.03 The time limits fixed by this section may be extended by mutual agreement between the employer and the worker and, where applicable, the representative of the alliance. 21.04 Without prejudice to the position that the employer or alliance wishes to adopt in the future, whether it is desirable that the issues be dealt with by the provisions of the collective agreements, the topics that may be considered appropriate for joint consultation shall be defined by mutual agreement between the parties. 19.03 By mutual agreement, the parties may use a mediator to resolve a complaint of discrimination. The selection of the Ombudsman shall be made by mutual agreement. This Annex to the Collective Agreement applies to all members represented by the Public Utilities Alliance of Canada (PSCA) for whom the CRA is the employer. Unless otherwise stated, the provisions of Parts I to VI shall not apply to other delivery initiatives. . . .