AR Aging Reports by Division

SOLVED

We have several operating divisions and we would like to be able to run AR Aging Reports by division so that each office could run their own aging report that only contains their outstanding AR and retainage items.  We have the added problem of receiving cash receipts as prepayments where there is no AR invoice, so the prepayment has no division attached to it.

Has anyone created a report that can be conditioned to do this?  

Thank you.