(1) In this Division parties , in relation to an issue, means the following:(a) the person conducting the business or undertaking or the person's representative;(b) if the issue involves more than 1 business or undertaking, the person conducting each business or undertaking or the person's representative;(c) if the worker or workers affected by the issue are in a work group, the health and safety representative for that work group or his or her representative;(d) if the worker or workers affected by the issue are not in a work group, the worker or workers or their representative.(2) A person conducting a business or undertaking must ensure that the person's representative (if any) for the purposes of this Division (a) is not a health and safety representative; and(b) has an appropriate level of seniority, and is sufficiently competent, to act as the person's representative.