This is a patented system of great flexibility and versatility. Directed at companies where the changing activity and the voracity of the market requires constant changes and adjustments for the way to work, is the same furniture which also facilitates adapting to those changes. Without need of skilled manpower it is possible to move and adapt it to the different needs of the moment. It Does not use screws so the assembly is facilitated even more. Its intermediate tray solves the problem of wiring in organizations and improves the access for users which means a significant ergonomic improvement for the product.