Hi guys and girls

I have just managed to get my camper (transit lwb ht) DVLA'd passed. Success but I am still having problems with the seat bed problem. I want to build a seat/bench opposite the side door that I can pull out on sliding bars into a bed. This then links up with a smaller seat also on sliding bars to form a complete bed as per some professionally fitted vans "Tragano Tribute" I have been plagarising ideas from. The reason for this is I can then store batteries etc under the seats. I have seen sliding bars at screfix and B&Q etc

I find I need diagrams and photos in order to understand what it is I have to do. Can anyone help please? There may be plans on the web site but I can't find them.

Much obliged in anticipation.
Trog