You may modify or customize the slides by saving a copy for the PowerPoint file from the CD and edit the copy. You are required to retain the denotation of the original source of the material ‚ it is not legal to represent these materials as your own work. However, you may indicate that you have adapted your materials from the workbook, and indicate that it is from the book Project Management Training, written by Bill Shackelford and published by ASTD Press.