Hi in this same project has 3 levels of 3d environment, Exterior like the image shown on the top and 1 interior space and podium… starting level will be Main menu having 6 buttons, 3 buttons vl be 3 levels,1 button will be for floor plans,1 button will be for still images and last one will be for animation sequence. I have created blueprints for switching levels and open images and floor plans.