Disable Enable Design Grid: Enable Design Grid=no (we will use our map as the guide)
Create a category with Event Name e.g Sunday Car Boot Sale
Choose Stylesheet Design Mode 6
Capture a screenshot of the venue (car park?) from a online terrain street map
Upload your image via the Background Image upload and SAVE the category
Now create some products Type-Reserved Seating (Stall 1, Stall 2, Stall 3 etc)
SAVE your products set Allow Box Office Design=yes and goto the Front End.
IMPORTANT NOTE: All products created for the Design Space will be relative to each other. This means if you delete any this will most probable affect the position of some or all of the objects. Therefore take this into consideration when designing the seat plan. Products that you don't want to be seen must be hidden (Admin>Alternative Categories Edit>HIDE)
Login as Box Office Agent and arrange the Stall Products over the map image.
Voila! you have a Car Boot Sale Booking System