On the navbar, click Unit Admin -> Groups.
On the Manage Groups page, from the View Categories drop-down list, select the category you want to add a group to.
From the context menu of the category, click Add Group.
If you do not want to use the default name provided, enter a group name.
If you do not want to use the default group code provided, enter a group code.
Enter a description for the group.
Click Save.

Watch how to create a group

Create a group