Alinka – I am not sure what taking them to NCAT on that issue would achieve.
I think you would be better off determining the status of the mediation and whether or not the time for that has passed. If it hasn’t – get the owners to determine whether or not they want to do mediation and appoint the representatives.
Otherwise – the issue is that the mediator was informed without authority that the OC would not mediate. Perhaps you then need to ask NCAT for a mediation session to be reset.