Within a max.12 moves, you need to sort the windows according the default schedule.
Inside the lighted window, you can see the required type of the window. If the lighted window is empty, it mean that the window is correctly set (filled square means no window at that place).
The windows with more than one casements you can rotate, or divide (chose the mode with the side button).
Undo button return one move back.
Advice for difficult levels:
Set the chain collision, and save the moves.
*****
Sep 2016