3820940 - How do you create a rule to hide non-preferred car results when preferred vendors are available?

Client performed a Car search, wherein he was able to see the non-preferred car vendors in the results with the preferred ones. However, they need to hide the non-preferred car vendors, if the preferred ones are available on the results page with Concur.

Rule to hide the non-preferred car vendors in the presence of the preferred ones. , KBA , CON-CA-ADM , Administration , Problem