I agree with @Schae235 it is difficult to help without more detailed information.
If indeed you are not seeing entries in the SSRS Breaking/Routing in the report style then you can add one. There is a 1-1 relationship to Breaking/routing and a report style so if you need to have additional rules or a similar rule to a different report style. Then you would have to add it.
Suggestion if you are doing this sort of thing is leave the Standard SSRS report style alone and start with a copy.
I am also going to point you to this post to help you get better responses rather than "Hey can we have more detail to your problem’
Here it is
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