User can map printers on any print server and print, everybody group has print authorizations. To restrict users to particular print servers use Group Policy. Start Group Policy Management Console (GPMC), and open GPO having users who restricted to particular print servers. In GPO, go to User Configuration, Administrative Templates, Control Panel, Printers. Open "Point and Print Restrictions," and set to Enabled. Choose "Users can only point and print to these servers" check box, and enter names of servers users can print to. Divide many entries with semicolon. Click OK to all dialog boxes, and close GPE. Refresh policy on clients for modifications to take effect.