To rename a Device Group:
In the Device Groups page, highlight a group and click on the "Rename" button.
The name should not be already assigned to any other group. Click "Rename" in the popup to confirm.
To modify device assignment of a Device Group:
In the Device Group's page, highlight a group and click on the "Edit" button.
A list of all cloud devices is displayed, with an indication for each device of whether it is assigned to the group. Also, a toggle button is displayed to control whether this group will automatically accept new devices:
To assign devices to the group, check the ones you want to assign, and click the "Assign" button:
Similarly, to un-assign devices, highlight the ones you want to un-assign and click the "Unassign" button.
When both assigned and un-assigned devices are checked, the buttons are not displayed.