split main report rows between multiple subreports

Hello, im facing an issue and i've reading and trying without success.

Main report has its own dataset. Then in the details section i have a subreport which i pass as parameter a field from the main report and this parameter is used in a dataset on the subreport. This works perfect.

Now, what i want is 3 columns of subreports and split the rows from the main report between the 3 subreports.

Example, subreport has a crosstab showing some product data, main report dataset has 150+ rows, so i want to have 3 columns of subreport with ~50 rows each.

I found no way to accomplish this issue. any help will be appreciated.

thanks in advance, best regards