Visibility to all open invoices

My original request was to know where to find the report that I can run with all open unpaid invoices without having to select client by client to run each client’s open invoice report. What I need is a report of all open invoices, or as an alternative to be able to organize the billing> bills tab to see all red flags together.

I see that in the billing tab > bills you can click on the headings invoice, importer name, total billed and it organizes the information accordingly. Is it possible to create another column that can be clicked to organize bills by paid and unpaid in order of delinquency maybe. Right now I have to go page by page to look for the red flags.