Yes, Section 36(2) of the Strata Schemes Management Act states that a “decision of a strata committee is taken to be the decision of the owners corporation”, but if there is a disagreement between the two, then the owners corporation decision prevails.
Schedule 2 in the Act sets out how decisions by the strata committee are made; essentially by a majority vote to a motion properly put at a strata committee meeting. Sufficient notice of the meeting must be given, and there must be an agenda listing the motions for the meeting, and minutes made and distributed afterwards.