Using null objects

If you want to assign a parent layer, but do not want that layer to be a visible element in your project, use a null object. A null object is an invisible layer that has all the properties of a visible layer so it can be a parent to any layer in the composition. (See Understanding parent layers.) Adjust and animate a null object as you would any other layer. (See Setting and animating a layer property in the Timeline window.)

A composition can contain any number of null objects. A null object is visible only in the Composition and Layer windows and appears in the Composition window as a rectangular outline with layer handles. Effects are not visible on null objects.

To create a null object:

Select the Timeline or Composition window and choose Layer > New > Null Object.

Note: The anchor point of a new null object layer appears in the upper left corner of the layer, and the layer is anchored in the center of the composition at its anchor point. Change the anchor point as you would for any other layer. (See Setting and animating an anchor point).