The shelf (or riser), along with the wah plate, attach with velcro and can be put any where on the board. Run your wires on top or through the oli slots for a clean organized look.

The boards are covered with fuzzy carpet type material that
 male velcro will stick to.
                                                                  
                                                        Standard size is 24" x 14" usable space, board and case, $219.00