Hello, thank you for getting in touch and for your support!
Have you had the chance to check the node page for the
Light Attenuation node? It provides information regarding the node and an example setup.
There are two samples that make use of that node, the CustomLightingToon and UVLight, which you may also examine.
We are also working on a tutorial that covers a few custom lighting related topics, I'll be sure to let you know as soon as it has been released.
Please let me know if the above information helps, thanks!