This chapter considers the process from the point of view that failure is never an option, which means that the planning and subsequent control methods must be designed to ensure that all the intended project benefits are achieved in full and on time. It examines how critical path method can be used to express accelerated plans. The plan must be able to communicate what people have done, what they are doing now and what they will be expected to do. The plan is at the heart of the project; it is most informative of all project documents and the common denominator for communication. However, planning is not always easy. Most projects are: complex, subject to risk, uncertainty and change, and wanted as soon as possible. Isochron simplifies the problem of multiple interdependencies by arranging project tasks in clusters of autonomous sets. Each set of tasks is bound internally by logical dependencies, but is loosely coupled externally with other task sets.