Abstract— Australian Defence is an example of an enterprise that is managing complex simulation requirements. Typically these are grouped as a named exercise, such as Talisman Indigo 2015. The synthetic environments must be planned, designed, developed, tested and supported during the production period of the exercise execution. With multiple exercises being run each year, over the planning horizon of two to three years, this can become a significantly complex management area. How to manage complex multiple simulation exercises is the simulation industry issue that this paper addresses. This paper presents a high level design for a management system to control the progressive development and execution of simulation exercises.