Customer wants a pull-out cutting board above the drawer in a Standard Base With Drawers. Tried to use the Divided Base cabinet, setting the height at 36″ in the default for divided base cabinet. In the divided box options, I set Position 1 at 20.75 for a fixed shelf , then Type 1 Doors. Then Position 2 at 26.5 for a mid stretcher, the Type 2 drawer. Then Type 3 set at drawer for the 2″ high cutting board. When I click OK, nothing happens. What am I missing?