Devices can be organized under specific folders. A folder can represent a specific type of device, a branch, a group within the company etc., for example: Desktops, Servers, North Branch, HR department.
To create a folder you need to go to: Customer View > Device > All > Actions > Add folder.
You can see the list of created folders at Customer site > Device > Folders.
In order to organize devices in folders, go the device page, click Edit > Edit Customer/Folder
Select the folder you want the device to be associated with.