I have a customer who is looking to use WebLink to allow end-users to access documents with a specific template.  While they are fine with the results returning all the documents with this template via a Custom Search Form, they want the Quick Search on the Welcome Page (seen in red box below) to only return documents that have this specific template AND have a specific value in one of that template's fields. 

As we can't use security to limit access, since they still need to be able to search these items in the custom search form, is there a way to customize the search syntax for this Quick Search so that we can limit what is returned without also limiting what is returned when searching via a Custom Search Form and the Search page?