This can be accessed by logging in to the Message Protect Admin Portal and going to "Policy Elements" then "User Groups".
"User Groups" are used to apply specific rules or reports to only certain groups. There are two main types here, "Internal User Groups" and "External User Groups"
Internal User Groups
This is to make a group out of users from your organization, for example if you want only certain users to have different spam rules, or to receive reports.
External User Groups
Creating a User Group
Simply select the "Create A User Group" button in the top right, and enter a name a description:
Click "Add User" to add users. Alternatively, click "Import Users" to import from CSV file.
You can then enter an email address and name for the group.
Note: Wildcards can be used to add a whole domain by putting "*@domain.co.nz" into the "Enter the email address" section.
For more information about wildcards, click on "Help" in the top right-hand corner. In the new window, on the left-hand pane, expand "Policy Elements", and select "Wildcard Characters".