In the Object List, select the model that you want to add to a layer.
Switch to the Layers window, and select Sculpt to display the SculptLayers window.
The name of the model you selected in the Object List appears in the list of layers.
From the Layers window menu (), select New Layer or click the New Layer icon .
A new layer is created. You can immediately sculpt on this layer. (New layers are inserted directly above any current active
layer.)
NoteOnce you sculpt on an empty sculpt layer, a number appears beside the sculpt layer in the Layers window to indicate the subdivision level it is associated with. You must display the same subdivision level in order to sculpt
on that layer.