At HTTP Proxy → Allowed domains and HTTP Proxy → Denied domains you can choose the allowed or denied domains for each eBox user. The global policy of the proxy must be in 'filter' mode for this list had any effect; classification of each domain on the lists is applied before any other proxy option.

So, you just need to add, to the deny access list or allow access list, the desired domains, to apply this option. Write the full domain name, whose default behavior you need to modify, and make click on the "Add" action icon. You need to write correctly the domain name, a correct example could be: "warp.es".

If you want to remove any domain from the lists, click on the "remove" action button, to erased your desired domain.