This seminar reserved VIP parking at Drop off Entrance 2 when VIP arrived; the security moved the VIP parking to Drop off Entrance 3 instant. Because it had another urgent event (Briefing and food tasting of ICVS) at BC room and also reserved VIP parking at Drop off without inform Service. The client who was take care VIP blamed for this situation that we should inform him first. Service immediately apologized to the client.