To create mesh regions

1. From the Geometry tab, click (Geometry tab > Create panel > Regions > Region From Mesh/STL). or

   From the Mesh tab, click (Mesh tab > Mesh Edit panel > Create Regions)

2. Click either Planar or Angular in the Tolerance area and enter a value.
3. Click STL or Mesh in the Create from area, depending on the type of model used.
4. Optional: Click Browse in the Selection option group and select a different property type for the region to be created.
   
5. Click Apply, then Close to close the tool and interact with your model.