Open the Group Policy Editor
Expand down to the Group Policy Objects container, right click and select New
Name it according to whatever standards you are using and click OK.
Right click on it and select Edit.
Group Policy Management Editor opens. Navigate down to
Computer Configuration => Administrative Templates => Windows Components => Windows Update. Then look for configure Automatic Updates and double click it.
Click enabled and choose the installation method that is appropriate for you.
Then double click on Specify intranet Microsoft update service location.
Click on enabled. Then enter the WSUS server and statistics server and click ok.
Finally link the group policy to the OU that you want to apply it to