different Scenes but each of them loads per frame

well i want to have something like restaurant that divided in 3 sections.and the user can switch between these but every Scene loads every frame.for example the character is in the first section and the player goes to second section and touch a customer and the character starts to go to the second section or have a button for kitchen but when the character goes to kitchen the costumers still load.i dont think that Application.LoadLevel (); could help.
thanks.

As I commented:

If you don’t want loadings between the sections use one Scene and move the camera, put a fade effect or something to hide what you did.