To track website information for a client within Hudu, start by accessing a specific client. Upon entering the client, click the Website tab on the left sidebar.
To manually add new websites to the list, simply click the "+ New" in the top right corner of the page to pull up a new window:
Website Information
Upon clicking on a specific website, an in-depth website informational page will be shown, displaying status, name and SSL certification information, records, and more. 
Relating Websites to Assets
Websites may be related to any other asset within Hudu by using the relations system tool, which can be found on the right-hand side of the page.