Game Development Reference
8. Carry on with these steps unil you've done one side of the yard as shown here:
Open the Outliner pallet. Select all of the fences.
Tip for quick selecion by name
Type fence into the box at the top of the outliner. It will now show only the items
within your model that have fence in their names.
10. Now right-click and select Make Group as shown next: