A system called TEMPUS is outlined which is being developed to simulate graphically the task-oriented activities of several human agents in a three-dimensional environment. TEMPUS is a task simulation facility for the evaluation of complex workstations vis-a-vis the normal and emergency procedures they are intended to support and the types and number of individuals who must carry them out. TEMPUS allows a user to interactively: Create on or more human figures which are correctly scaled according to a specific population, or which meet certain size constraints. View the human figure in any of several graphical modes: stick figure, line or shaded polygons, or shaded BUBBLEPERSON. Position the figure in any admissible position within joint angle constraints, and with the assistance of a robotics reach positioning algorithm for limbs. Combine the figures with three-dimensional polyhedral objects derived from an existing CAD system. Create shaded graphics images of bodies in such environments. Use all TEMPUS features in an extensible and uniform user-friendly interactive system which does not require any explicitly programming knowledge. Other features of TEMPUS and differences between TEMPUS and other available body modeling systems are also discussed.