This script will create a new null and parent all the selected layers to it.

Control the cameras movements via sliders on a Null.

This script creates a null layer that spans the distance between two selected 2D layers.

This script creates a new null layer with a slider that controls its position between two selected layers.

This script creates a null layer whose position is an expression-driven value of the average of the selected layer’s motion tracker track points of your choosing.