Web Manager for Administrators > Configuration>Security>Users & Groups > Adding a Group

Adding a Group
If the “Add” button is clicked the Configuration>Security>Users & Groups screen under the Group list, the “Add Group” dialog box shown in the following figure appears.
Configuration>Security>Users & Groups “Add Group” Dialog Box
A new group is defined by entering a group name and a comma-separated list of users.

Web Manager for Administrators > Configuration>Security>Users & Groups > Adding a Group