case10An airport wants to determine the minimum number of desks at Passport Control and at Customs to have acceptable waiting times for passengers. The passengers do not arrive in a continuous stream; each time a plane arrives, a cluster of passengers simultaneously enters the airport. At Passport Control, a distinction is made between EU, non-EU and biometric passports. Several strategies are compared for distributing the three classes over the desks. The variability of the passengers walking speeds and the speed of the baggage handling system are taken into account.