Step 1:

Log in to your KAS (Technical Administration) and click the menu item Tools on the left.

Step 2:

Now choose the subitem DDNS Settings.

Step 3:

In order to create a new DDNS user, please click Create a new DDNS user on the right side.

Step 4:

Select your domain name from the drop-down list and enter a subdomain name.

Determine a comment and a password for the new DDNS user. Finally, click on Save in order to create the user.

In case you want to use IPv6, please additionally enable the Dual-Stack option.