To Create a New Layer, click New in the Layer Window. You'll see an "Untitled_1" layer is created. This new layer is automatically set to be visible.

To Rename a layer, click on the layer name and it will become outlined and highlighted. Through the Edit Layer Window, you can assign, and un-assign objects to the selected layer. Highlighted names are part of the chosen layer.

Note: A layer name cannot be the same as any previously created object. The LayersManager will add a numerical extension to items that have a name that is already in use.

You can also assign objects to a layer through LayersManager. Make sure the object to be added, and the layer it will be added to, are both selected. Click Add. Likewise, you can remove an object from a layer. Again, make sure the object is selected, as well as the layer. Click remove.