How to serve new registrator?

Hello,
My requirement is:
In my site, there are two kind of registrator: teacher and student. When a new student registered, is it possible to assign a teacher to serve the new registrator according to some rules. Are there any potential solutions.
Thanks!
richard

Don't understand, what do you mean by "serve the new registrator". Please be more specific as to what you're wanting.

It is like a customer service system. When a new student sign in for the first time.
The administrator can assign a teacher to serve the student though a link or a cb tab,
and they can talk for each other like the connection function of community builder.
Thanks!
richard

So you're wanting to automatically make a connection between 2 users based off some pre-defined rules? If am understanding correctly then you could use incubator project CB Queries using the after registration trigger and conditionally check a field to determine who they should be connected to then using queries establish the connection. Example query as follows.