I love your new sewing room. Those slide out shelves were for the old typewriters and I think it should pop up. Someone may have changed it and used it for a printer shelf. When all six of our children lived at home (seemed like forever lol), the only room I had to sew in was the dining room with the table, buffet and china cabinet in place. I made many a dress in that room. I loved it. Although I had to put everything away at night and that was too bad. Good Sewing!