The POS Function Search Quote allows you to lookup a specific quote at the point of sale. You have the option to modify or close the quote.
The following article explains how to set up POS buttons: Create or Edit POS Buttons. Select type “Function” and “Search Quote.”
Use at the POS:
Navigate to the button layout that contains the Quote Lookup button and simply press the button at the point of sale. This will open a new screen allowing you to search quotes.