Once you have created one or more point cloud objects from your camera or object tracking analysis, you can use the Point Cloud menu to help you snap objects to the points in 3D space and have them perfectly follow the movement in the scene.
In the schematic, you can see that the axis of a point cloud object is automatically attached to the Analyzer node. You can then add objects (such as a 3D text geometry), and use the Point Cloud menu settings to help you position the object into your scene.

To access the Point Cloud menu, double-click the point cloud object in the schematic.