Can I create a record that is a grouping of other records?

Hello, I have two custom entities, one called "Invoices Received" and another called "Bill Payments." A Bill Payment record is a collection of multiple "Invoices Received," all of which have common criteria (i.e., the Payee and Payment date). I'd like to be able to automate the creation of a Bill Payment record, by having CRM identify which Invoices Received have common criteria (e.g., same payee and same payment due date) and then grouping them into a single Bill Payment record. I was trying to think of a way to do this with a workflow, but I am stuck. Any suggestions?

Thanks!