ACCESS PERMISSION RESTRICTION AT THE VENDOR LEVEL

We need to give our fleet management admin access to Vendors, but would like to do so with selective Vendors in order to prevent exposure to sensitive information incommensurate with the user's seat. Does anyone have any ideas for how to do this? My first thought was Vendor "Type" - but doing an F7 on "Type" in the Vendor module does not appear to have an applicable option. 

Any thoughts??...