Report Design Question two horizontal column headers one below other

I have a report requirement, i am new to reports.

I want to have two lines of column headers.( with 7 columns in parent columns header)

and 7 columns in child column header.

The first column header will show a parent record.

And after the parent record i want to show the next child related horizontal column headers and will show all child record related to the above parent record.

its a one to many: 1 parent record and below all child records for that parent record.

can i use subreports controls to show all child records of the parent.

Thank you very much for the information.

I would recommend that you a table report

Assume that you have a structure

Country A

Region A1

Region A2

Country B

Region B1

Region B2

Region B3

In this scenario create a table that groups records by country. In the group header/footer (depending on your need) add a new table that contains regions associated with the country.

HTH.