newbie cfengine2 question about server roles

Hello. I'm try to use cfengine2 after chef.

In chef i can create roles that contains recipes. When i'm apply role to
server all recipes is done on it.

How i can do something in cfengine2 ?

Thank You.

You would probably do better to ask such a question on a mailing list related to cfengine, rather than the clang developers' list.