So seeing some unconcluded discussion and on a quest to rename some attached devices, I couldn't figure out how to edit attached device names again after having done it before to others.
What I learned: Dynamic QOS MUST BE ENABLED or the option to select a device to edit is removed and only a list is shown without the check boxes.
You can change the names necessary in the Attched Devices page and then disable Dynamic QOS. The changes will remain.
