I had to have it explained to me, and then I felt very stupid
You put two items in, one on each side (have to be the same type of item). then for the top, middle and bottom, you click one side or the other to decide what look, stats and add-on the new item will have. So if you just want the look of a lower level item, you click that item on the top, then the newer item on the next two levels down, and then click transmute.
My god I feel daft now
