Modify panel > Select objects or sub-objects. > Modifier List > Animation Modifiers > Linked XForm
Modify panel > Select an object or sub-objects. > Modifiers menu > Animation Modifiers > Linked XForm
The Linked XForm modifier links the transforms for any object or sub-object selection to another object, called the control object. The control object's motion, rotation, and/or scale transforms are passed onto the object or sub-object selection.
Linked XForm connects any geometry it receives from the stack to another object, which is called the control object. Its single control simply picks the control object. To use this modifier, you must have at least two objects in your scene.
See also
Procedure
To apply a Linked Xform modifier:
Choose a location in an object's stack and click Linked XForm on the Modifiers rollout.
On the Parameter's rollout, click Pick Control Object. When animating, do this at frame 0.
Select the object you want to be the control object.
This completes the link. The name of the control object appears on the Parameters rollout.
Interface
Control Object: Object that the vertices are linked to. When transformed, the vertices follow.
Pick Control Object: Click this button, and then select the object that you want to be the control object.