Our padded arms fit one the same way the back supports do.
Just slide the hooks along the side of the open ottoman.
We love the comfort and convenience of this couch! 4 squares however, do not make a queen sized bed, its short, definitely wide enough but short. You would need 6 cubes to make a real bed. But other than that we truly love the size of the couch, its beautiful, the color is gorgeous and its very comfortable!