RMA Processing Invoice Line Search

Does anyone know if it is possible to modify a standard Epicor search? The standard invoice line search within the RMA Processing is a very sad search. I would like to at least add the part number to the search.

Could this not be done with a quick search?

I’m surely not as advanced as some when it comes to quick searches. It is possible to only display the lines for the subject invoice, without specifying the invoice number again as criteria in the search? In this screenshot, when I select line…to search for the invoice lines, I only want the lines for invoice 10000