During the transport through the building, it is a compact unit that fits into the lift. When in use, the trolley can be folded out in various ways, so that it may be adapted to the room in which it is temporarily placed.
The unit does not only serve as an outlet for coffee, tea, sandwiches etc., but can also be used during receptions. On those occasions, coffee is substituted for other drinks and sandwiches are replaced by appetisers. Three coffee trolleys, in different colours, were made.