Acrobat Script Help

i have 5 categories with 3 check boxes in each category. [like: category 1: checkbox1, checkbox2, checkbox3 category 2: checkbox4, checkbox5, checkbox6 category 3: checkbox7, checkbox8, checkbox9 category 4: checkbox10, checkbox11, checkbox12 category 5: checkbox13, checkbox14, checkbox15 ] now i want.. any 1 group items can be checked. eg: if i select checkbox2 in category 1, then remaining 4 categories should be unchecked. i must be select 1 or all checkboxes in 1 category (checkbox1,2,3 in cat1) like: if [login to view URL] = true then checkbox4, checkbox5...[login to view URL] = false