Reports :: Generate Number Of Rows In Report Depending On Number In Another Field

I have a form where we fill in information for supply of equipment to employees.

Each item must be signed for on a printed report.

I am encountering problems trying to create enough rows in my report detail for each signature of the items supplied.

For example, on the form I will select the "equipment" - 4 hats supplied and 3 boots. On the report I want the equipment set as the group and the detail to be a number or rows which equals the number of selected items. therefore under the Hats group heading I want 4 blank rows which are made up of 3 text boxes - Print Name, Signature & Date and another group heading for boots but with 3 lines.