By moving the bulkheads and selecting a range of objects from a 3D library, the end user is able to construct and save a range of different options for subsequent presentation, discussion and evaluation. The object libraries include a variety of single and dual-screen consoles, wall-mounted displays, command tables, seats, ladders, and so on. The user is also able to select a number of 5th, 50th and 95th percentile avatars (male and female – based on data from recent military anthropometric data sources) and can position these around the deck area, in either seated or standing postures. Seated avatars can be configured to represent basic console poses and, for early ergonomics assessments, all avatars can be endowed with basic vision cones and reach envelopes.