To Align Two Curves
1. Click > . The Align tab opens.
2. Select the required constraint from the Constraints tab. By default, the curve constraint is set to Position.
3. Select the curve that you want to align.
4. Select another curve to use as the reference curve.
While aligning, the first curve modifies itself to match the direction of the tangent of the second curve.
5. Move the vertex of the modified curve along the reference curve to the desired location.
6. Click
.