About "Web Tab"

Hello!
How do I add the add web contact to my page please, I've been to the manage web contacts page but I cant find a way to add the facility to my page.

Of course, I checked the "Callsign View Options" field, and there are only two options, "Detail" and "Biography".
Do I have to subscribe to "Web Tab"?

Thanks in advance.
Sam

 

thank you very much