symantec antivirus defination update automatically

I Got a separate server with anti-virus install (Symantec antivirus) program version 10.1.5.5000

and Symantec system centre install to manage the client update 

with my present scenario I have to update manually antivirus definition on server than on client trough Symantec system centre manually.

I want that the definition get update automatically to the server machine and then to the client without and manual interference