In CooSpace, the scenes which you do not want to use actively, but also do not want to delete, can be archived. This way, the archived scene will not be visible in the scene list, only in the list of archived scenes.
The archived scenes can be viewed, but cannot be modified. If having authorization to do so, you can archive a scene in Scene options in the left side menu, by clicking on Archive scene.
You can restore an archived scene by clicking on Restore from archived state.