Building Complex Game Objects - Beginning Game Art in 3ds Max 8 - page 122

Figure 4.63 I adjusted the vertices.
Putting It All Together
You might notice that when you select any parts of the Mustang and try to move
them, they move independently and are not one model. You need to hook these
separate pieces together to create one model or hierarchy.
1. Click on the Select and Link button, located on the Main toolbar
(see Figure 4.64).
Figure 4.64
Click on the Select and Link button.
2. Next, select the main wing and click and drag it to the fuselage. You'll notice
that a dotted line appears, and when you reach the fuselage a plus sign
appears (see Figure 4.65).