For both Conventional and TBM templates, when the user will open the dgn for editing, he will enter the 2D Sketcher mode. After the user draws the geometry (closed shapes or circles) for the 3 required shapes, theoretical excavation, extrados, and intrados, using the tag options from the Define Tools group, he will attach properties to the selected geometry. The element template option from the tag tools GUI will assign the selected geometry on the associated level in the 2d Sketcher mode.