This is the final paper in a series of three on SYS IV, a computer-based management system developed by the PLATO Curriculum Project (PCP) which tests students, routes students to lessons, stores detailed records of online student activity, and keeps summary records of student activities. An introduction describes how the system simultaneously addresses the needs of students, classroom teachers, and school administrators. The remainder of the paper explicates how implementation is carried out to tailor the system to a project, which may serve a broad population range. Considerations important at the preliminary stage that are listed include the characteristics of the student population, the educational environment, and the catalog structure. Under project staff training, the discussion includes both initial and follow-up training procedures. The importance of site visits in maintaining a project is emphasized, while final considerations center on the "user transparency" of the system. Appendices include programs for signing on as an instructor, adding a student to a group, and a sample agenda for a SYS IV training workshop. (LMM)