Software Configuration Management addresses roughly two areas, the first and older one concerns the storage of the entities produced during the software project; the second one concerns the control of the activities performed for the production / change of these entities. Work space support can be seen as subsuming most of the later dimension. Indeed, work space is the place where activities take place; controlling the activities, to a large extent, is work space control.This short paper presents our concurrent engineering experience in Dassault Syst