Once the final plans have been approved, interior designers enter designs into software such as computer-aided design (CAD) or building information modeling programs. They next determine a timeline and project costs. Once interior designers have ordered everything and prepared it to be put into place, they oversee all installations. After everything is in place, they ensure that clients are satisfied and, if not, make any necessary changes. Many interior designers specialize in a particular type of building (e.g., homes, hospitals, and hotels), a certain room (e.g., bathrooms and kitchens), or a specific style (e.g., Art Deco). Some interior designers work for home furnishing stores by providing design services to help customers to choose materials and furnishings.