I’ve seen this class of instance in, for example a tool. What is the use of it?
To get the angle you want when the item is published to the toolbox. Roblox doesn’t allow us to upload custom thumbnails for library assets, so a new camera is made and the camera angle is set to be where you want it to be. That is why some admin command systems have a “thumbnail” – it is actually just a camera pointed towards an invisible part with a decal on it.
Oh, so it doesn’t have any use in developing?