Select the raised part of the center section of the unit.
Set your Styles and Textures as shown below.

Flood fill twice.  Leave selected.

Invert the Selection.  Effects/3D/Outer Bevel/Groove Preset.

Add a new layer.  Make a selection on one of the cabinets similar to below.
Flood fill twice with the same settings as above.  Leave selected.

Invert the Selection.  Effects/3D/Outer Bevel/Bead Preset.

Add a new layer.  Change your Styles and Textures as shown below.
Activate your Shapes Presets.  Use Button 038 with Retain style unchecked.
The button should be sized similar as to how it is shown below.

Once sized correctly, deselect and covert to a rastor layer.
Zoom in and select the light wood inside with the Selection tool
Delete this area.

Effects/3D/Inner Bevel/Metallic Preset.

It's time to finish this wall unit up.

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