Switch Layout in Default Layout (Menu Bar/Layout/Layouts/201 Default Layout). Create materal for the model, then create an item mask (Item List Tab/RMB on model/create item mask in Item List).
Set the two DispMaps to the material. On the Render Settings panel (Render Settings Tab/Add Layer/Image Map), set Effect to Displacement (at the positive displacement map in render properties set the layer mode to Add, and at the negative to Subtract (Render Settings Tab/Render Properties/Texture Layer).
Set the amount of displacement of the material (Render Settings Tab/Render Properties/Material Ref/Displacement Distance), set the model to subdivision mode. Set the camera, the lights, the materials and the render settings (Render Settings Tab/Render Properties/Shader Tree/Render) and render (F9).
