Vendor Code Search placed along with Item Code search on Purchase Order Add Line Item section

Can a search link for the vendor code be placed on the Purchase Order - Add Line Item Area. The state of Alabama is using a new food order system and when the Supervisors get their invoices it only has the vendor code listed on the invoice. I know it can be reached by just clicking the search icon, but I'm trying to make it easy the Supervisors so they won't have to make an extra click. Similar to the way it works on the Inventory Item screen.