[![Scene layers](https://i.stack.imgur.com/KFINb.png)](https://i.stack.imgur.com/KFINb.png)

Not sure of correct term, but, how do you delete a layer such as the 'body' layer.

[![(244) Lamp)](https://i.stack.imgur.com/T6i08.png)](https://i.stack.imgur.com/T6i08.png)

Once again, not sure of correct name for this, but the (244) should read (1). How is this deleted or changed?