When you have multiple device groups created for a customer group it should be possible to move the endpoints to the sub-groups for that customer.
The devices always go to the "Default Group" and if we have to move the devices, then we have to go to "Group Management" of each sub-group and click on "Add Devices". This is a tedious process.
We need the ability of moving the devices to the sub-groups right from the Group Management tab under the Default Group.