I have few small boxes which I want to fit in big box. e.g I have 4x3, 4x4, 4x8 small boxes. And one big box of 4x(3 + 4 + 8 = 15) => 4x15. I want all these small boxes to be aligned in one line. Which are covered by big box. This big box is not visible at very close distance from camera only small boxes are. But it hides all the small and displays it self only at large distance from camera. How do I achieve this?
Edit 1: I have drag and drop functionality thanks to @Wingnut, so doing drag and drop on big box should affect small boxes.