Age of Debtors / Invoice due

i would like to caclulate the age of debtors, Less 30 dys, between 31-60 days, between 61-90 days, betwenn 91 - 120 days and more than 120 days. The reference date should be the invoice due, not da date of the invoice.

What steps and how can i do that in jet enterprise?.

Thank you very much in advance.