This feature is available on Artica v4.30 Service Pack 951 or Artica v4.40
On the left menu, choose “Filtering service” > “Features”
Click on “Filtering service” tab
Down to “Category service” section.
Turn ON the “Use remote Categories Service” and set the Main domain name you have defined in your Artica categories service server.
If you did not have defined a subzone of your main domain name: Turn ON the “Direct connection” checkbox. Specify the IP address in “Remote server address” and port in "Remote server port" field of your Categories service server.