Invoice lookup for payment on multiple invoices

Hi all. I am new to Sage 50 US. I am taking over the AR duties and have a questing about being able to do a find when receiving a customer payment on multiple invoices. Currently  when I receive a payment from a customer they may be paying for a couple of hundred invoices on the check or wire and when I pull up the vendor it shows all open invoices by due date (which is hundreds more than the payment is paying) so  I have to search manually by scrolling through all invoices for that invoice number to select. So as you can see this manual process can take a few hours to post a single payment. I have looked in the program and online but I am unable to find any help. I am hoping that someone here has had the same issue and has found a way to do a find for selecting invoices to mark as paid. any help on this issue would be greatly appreciated.