I got this frame as shown in the picture and I want to put sheets on it with 1x1 meter. It should be symmetric and if I change the frame from 4 to example 6 meters, 2 sheets should be added automatically. If i change it to like 3 meters, it should be 2 - 1 meter frames and 2 - 0,5 meter frames. I have no idea how to do this. Thank you in advance.