On the prizee lab you will be able to find a good article by the creator of the extension giving you some explanations and basis to start using it.
The thing is, it’s only in french – I’ll see with them if we could have an english version or if I could translate it.
See the post HERE
But everyone can download the UML diagram of Kairos for AS2 or AS3
You should bookmark this blog anyway to get news fro, the guys behind lowRa and Kairos as they are working there 😉