We have an annual conference in which individuals register for. Also, this conference has multiple workshops over a 5-day period that individuals can register for. When registrations are completed, multiple invoices are made for the event and workshops. When the invoices need to be submitted to the agency's accounts payable it would be helpful if the event and workshops could be listed on one invoice for that individual instead of multiple different invoices. Sometime agencies will miss an invoice to pay and have to resubmit. If it was all on one invoice with the event and workshops listed, it would be more streamlined for payments. Basically, I would like to have the ability to issue on invoice for all outstand unpaid invoices of a particular individual.