For example, now your children grown up, and you want to share your garage door with not only your wife but also with a children. But, you still have your drinking machine (it was helping you while your children were growing), so you don't want to share it with your wife and children. The device can have only one owner. You can give View Organization Devices permission your to your family. However, in that case your family will see other devices within your organization. So you have to create a new sub organization, invite into it your family with View Organization Devices permissions, and now they will be able to view the garage doors. Sub organization has only one device, so your family will see only it. While you still be able to see the devices in own/root organization via the search and in the sub organization via organization switch.