How to use this light node group

Using this node group is very easy. First, simply add a few area lights to your scene and put them together in a new collection. Then, select that collection inside the node group.

To make sure you don't have too many lights in your scene, you can go to the area light properties and enable "Exclude from Viewport Display" for the original collection.

Next, you can add three-point lights to your scene and customize them fully as you like.

If you want the lights to follow or track a specific object in your scene, just enable the "Tracking Object" option and select the object you want the lights to track.