If your dishwasher is the last item, it won't have a carcass, the door is applied to the appliance.
And you'll just be finishing with the deco end panel.
Or have I misunderstood?
You have perfectly understood. Dishwasher will be the last item. I know the door will fit directly to the DW. Where I need advise is on how to strongly keep in position the decor panel and width I should consider between the last unit and decor panel. Shall I consider as between the last unit and decor panel I can still fit a unit inside or with will be less? I know they are stupid question but I`m worried to get it wrong.