Navigation:  Calculation Modules > Analysis > ENERCALC 3D > Ribbons > Advanced Meshing > Add Region

Advanced Meshing > Add Region displays the following dialog.

 

 

 

It allows you to add a region to mesh model. You must first select beams as the boundary (closed polygon) of the region. You have the option to deactivate or delete the selected beams after the mesh region is created.  This ensures that the selected beams will not be part of the structural model.