When working with layers in 3D space, many times you want to be able to move through them without having to worry about the camera panning and distorting the flat layers. This script quickly sets the camera's auto orientation to off. This, in turn, transforms the camera into a dolly camera that is free to move on any axis but is parallel to the 3D layers at all times.
Png button included for integration with the Launch Pad script.
If nothing is selected inside the composition or no camera is selected, this script creates a new Dolly Camera (numbered according to how many dolly cameras the composition has). If one ore more cameras are selected when this script is executed, the script will alternate between each camera's auto orientation settings being off or pointing to the Point of Interest for that camera.
EDIT: Version 1.0 added an expression to the point of interest to give the dolly camera effect for the cameras. Paul Tuersley correctly pointed out that the auto orientation settings can be set to off for the camera and it will do the same thing. Version 1.1 integrates the method Paul mentioned.