Simple, if you agree to their pay deal, notify them you will be out of contract compliance immediately. Shake hands leave the room. Then request a meeting to discuss the wholesale dismantling of previously agreed rostering practices without consultation or negotiation, and notify the company that a vote on contract compliance on the issue of rostering practices will be tabled to members. Specify a day that is the minimum under the rules for notification to members for a vote. If contract compliance was specifically aimed at pay, if pay is resolved, remove it, then vote on it again for rostering, and any other issue you wish to be resolved.