A client added to the scope of work last minute during a cleaning today; how do you manage the schedule so it doesn't derail the subsequent appointments?

During a move-out cleaning this morning, the client arrived and requested to add the garage and balcony glass to the scope. The cleaner was already scheduled for a two-hour slot, and there was another appointment afterward; agreeing to it immediately would have definitely caused a delay. I had the team lead take photos of the current state and provide a separate quote for the original scope…