The vertical circulation organizes spaces. The program demanded spaces where they could meet clients (kitchen and dining area, meeting room, seating for the head of the agency) and work areas in open space where each spot has his own defined space. Plus, a real challenge was to create a link between the different floors. The staircase is a central element. It divides workspaces and community spaces. Its shape fits the roof structure. Made of wood, the staircase is a real space that you can use and experiment. The rest of the furniture has been developed from this kind of sprawling extensions. Finally, the offices have been designed taking into account the need for everyone to find their own space within the open space. A main frame in multiplex forms the skeleton of the clusters work tables. The intention is to capture synergies while maintaining a certain distance between users. On the ground floor, there are at the foot of the stairs a new office area and a meeting room.