To Align two Objects in 3D

1. Click Modify 3D Operations 3D Align.
2. Select the objects that you want to align.
3. Specify either one, two, or three source points and then the corresponding first, second, or third destination points. The first point is called the base point.

   The selected objects are moved from the source point to the destination point, and second and third points, if you specify them, rotate, and tilt the selected objects.