A user guide and training manual written for Project Management Professionals who wish to learn how to plan and control projects in an established Primavera P6 and earlier Enterprise versions with or without Resources and Roles Project. This book is an update of the authors Primavera Version 5.0 book and contains more chapters including Global Change, Multiple Project Scheduling, Managing the Enterprise Environment, Resource Optimization and Leveling. It has been written using the Construction and Engineering version but may be used by any industry and covers Versions 4 to 6. The book is packed with screen shots, constructive tips and contains workshops with solutions at the end of each chapter for the reader to practice the skills taught. This publication ideal for people who would like to quickly gain an understanding of how the software operates up to an intermediate level. It covers Primavera Versions from 3.5 onwards and it explains some of the differences from SureTrak, P3, Microsoft Project and Asta Powerproject to assist people converting form other products. The book is designed to teach planners and schedulers in any industry how to setup and use the software in a project environment. It explains in plain English and in a logical sequence, the steps required to create and maintain an unresourced and resourced schedule. It tackles some of the more complex aspects of the software that the user manual does not address. It highlights the sources of information and the methods that should be employed to produce a realistic and useful project schedule.