The Position constraint lets you apply at least one source object to constrain the translation of a target object.
The Position constraint
The Position constraint requires the following objects:
An asset, model, or other object that is positioned and translated in the scene based on the position and movement of one or multiple source objects. Also known as the “child” object.
Sends translation information to the constrained object. Also known as the “parent” object.
When more than one source is specified, the constrained object is placed equidistant from all source objects.