Constrain > Point on Poly

Constrain > Point on Poly >

Maintain Offset: Preserves the original (state prior to constraining), relative translation of the constrained object. Use this option to maintain spatial relationships between constrained objects.
Offset: Specifies an offset position (translate X, Y, and Z) for the constrained object relative to the target point. Note that the target point is the position of the target object’s rotate pivot, or the average position of the rotate pivots of the target objects. Default values are all 0.
Animation Layer: Lets you select an animation layer where you want to add the point on poly constraint. See Create point on poly constraints for more information.
Set Layer To Override: When on, the layer you select in the Animation Layer drop-down list is automatically set to Override mode as you add the constraint to the animation layer. This is the default and recommended mode. When off, the layer mode is set to Additive as you add the constraint. See Add constraints to animation layers for more information.

See also Animation layer modes.
Constraint Axes: Determines whether the point on poly constraint is restricted to a specific axis (X, Y, Z) or to All axes.
Weight: Specifies how much the constrained object’s position can be influenced by the mesh. Use the slider to select values from 0.0000 to 10.0000. Default is 1.0000.