Kontrol S4 Register Question???

Kontrol S4 Register Question???

In the article for the scratch upgrade with the kontrol s4, it says you need to register your s4. How do I do this? Do I do it when I first plug in the kontrol s4?
Do I do it through the NI website? If someone could answer this for me that would be great.

Thanks!

After installing traktor, with the service center.