Execution servers of a certain location can communicate with the application server through a proxy. Once you (as System Administrator)
               have configured a proxy server, the clients can enable the proxy. To do so, the clients have to click 
               		 in the menu, click 
               		 (Edit) in the 
               		Actions column and check the 
               		Use system proxy check box.
 (Edit) in the 
               		Actions column and check the 
               		Use system proxy check box.