The Portfolio screen in the cheque module shows cheques by status: collected, bounced, on hand, endorsed, and so on. What a business usually wants to know is different: how much money is coming in on which date, and how much is going out on which date, in the days ahead?
The Due Date Report shows exactly that. Cheques to be collected are listed as positive and cheques to be paid as negative on the same calendar, so you can see ahead of time exactly where the till will stand on a given day. Collected or paid cheques do not appear on the list, only obligations that are still open.
By default the report looks forward from today; you can also filter to overdue cheques only. The report is found in the Reports section of the Cheque module.