To detect multiple structures in your model and select one of them, use the following procedure.

1. Right-click in the view area and then select Select multiple structures from the pop-up menu. The Multiple Structures dialog opens.
2. Select one or more items in the List of structures.
   Tip: Hold <Ctrl> to select more than one item in this list.
3. Either:

   click OK to close the dialog and select the structures

   or

   click Apply to select the structures to highlight them with the dialog open.