Grouping and Row limit in SSRS

I want to have row limitation(for example, display only 10 rows in every page) to my table in the report. I could limit the rows with Ceiling method where I could find refer. However, I have to group based on two criteria before using row limit. One is I want to group by category by category name, after that group by based on Region. And have my row limit after that. How could I achieve this? And I want to do all of these in report level. Kindly share any insight on that matter. Thanks.