There isn't a list of rules... Basically the person should impress one of the council members of the Forum Ninjas Blog, by his activities in the MSDN and TechNet forums.
First step: make sure that the user fit as
TOP CONTRIBUTOR in the forums.
* Usually this mean about 1k points in a month more or less, for long time.
Points are not the only parameter to check activities but it is a basic and simple parameter that can be good starting point.
Second: Add a link to the user profile, so we will have the tools to check his activities in the forums