Image size in Q

When I change the image size in the Q menu it allocates that choice in all the custom settings. For instance in C1 I want 3.2M and in C2 1.1.M, however when I change to 1.1M in C2 it changes C1 as well. When I go to main Custom settings menu there isn't an option for image size. Is there a way of allocating image size to custom menus?

Thanks in advance.