IBM ILOG Dispatcher User's Manual > The Basics > Adding Visit Disjunctions

In this lesson, you will learn how to:

You will learn how to model and solve a vehicle routing problem (VRP) where only one of a pair of visits can be performed or where there are alternate sites available for a visit. For example, a customer may have more than one site available to receive deliveries. Dispatcher provides visit disjunctions to model these types of problems.

You will also learn how to add and remove visits from an existing routing plan in a dynamic problem. In many situations, it may be necessary to take an order and add a visit to an existing routing plan. It may also be the case that an order is cancelled by a customer. Recomputing the plan from scratch would be far too time-consuming, so Dispatcher allows you to add or remove a visit by modifying an existing solution.