Once a Group has been created, you can assign users, managers, or both to the Group.
Step One: From the Groups page, click on the associated users or managers column.
Step Two: Search by any of the mapped user's data i.e. name, department, team, location, etc.
Step Three: Use the checkbox next to the users to add them. Add as many users as necessary then click next to preview the group.
Step Four: To make any changes to the audience, click Previous. If the users' list looks good, click Confirm Assignment.
You will now see the total number of users for the Group
For more information on how to add additional layers of permissions to Group Managers, click here.