A target object’s weight specifies how much the position of the constrained object can be influenced by a target object. The weights are attributes of the point constraint. For each target object, an attribute named targetObject Wn is included that specifies the weight of each target object. By default, the weights are set to 1, which gives each target object an equal influence over the constrained object’s position. However, you can change the weights so that some target objects can have more (or less) influence than others. You can change target object weights with the Channel Box or the Attribute Editor.
To change target object weights with Channel Box or Attribute Editor
Edit the targetObject Wn channelsattributes as described in Edit pole vector constraints.
After you’ve created a point constraint, you can remove any of the target objects so that the objects no longer constrain the constrained object.
Note that when you remove a target object, you also remove any animation curves attached to the constraint object for that target object.
For this procedure see Modify Constraint Axes.