In this Tutorial you will learn “How to create a path constrain animation in 3ds max”
Step 1. Create a shape or a path using line tool.
Step 2. In this step what i did is i modified path by moving vertex, Because we can draw path only in x and y axis . (modified path according to your requirements) As shown in image below.
Step 3. Now import your object in view port.
(import>> merge>> select object)
Step 4. Select the object and click on animation from menu bar. Go to constraints and select path constraint option.
(Animation>> constraint >> path constraint)
Step 5. When you move the cursor on the line(path) and when you see can the + sign, click on the line(path).
Step 6. Your object is now been animated and moves along the path.