If you chose to add Webmail capabilities to this virtual host, then the following screen will be active to allow you to make changes.
In the first section, Webmail Status, the Guardian Digital WebTool will tell you the current running status of Webmail and the URL to access it.
Following that is the Webmail Configuration which has all the options presented to you in the initial creation of the virtual host. All the options are described previously in Section Tool - Creating a Secure Virtual Host.