You can use custom categories not only for recategorizing websites in Sophos XG, but also for allowing or denying access to specific sites for certain users. They can also be used to reclassify the browsing 'productivity' for certain users when viewing Internet usage reports in Fastvue Sophos Reporter. For example, you can use them to classify lingerie sites as 'productive' for people in a retail lingerie department or to classify social media sites as 'productive' for people in the marketing department. There are a couple of "gotchas" in doing this, and I will explain how to avoid them while taking you through the process.