@madamme said:
can the decision to lodge a claim be done by one person alone without consultation with the others – eg strata manager, secretary or lot owner?
The insurance is held by the owners corporation so it is only the OC that can make a claim. The committee exercises the functions of the OC, so generally the committee makes the decision to make a claim, though in principle a general meeting of the OC could make the decision. In practice, the committee would usually direct the manager to make the claim on behalf of the OC.
By the way, the advice veered off into discussion of claiming against the OC’s liability insurance but we don’t know what the Tribunal matter is about. Perhaps more useful advice could be given if we knew more about the matter.