Create a reference to the layer by dragging the layer onto the Layers pane. The layer remains in the Site Explorer and can be used in other maps. A link to the layer is created in the Layers pane of the Map Editor. You can also create new layer references in the Map Editor and associate them with layers in the Site Explorer.
To add layers to your map
You can change the layer resource and other settings as needed. For more information, see Specifying Layer Settings.
Users with write permission can modify, move, or delete layer resources used in your map.