To make a shed roof of your own you'll need to use a Roof and Magic cube tools.
- Create rooms of the house;
- Add two slanted roofs;
- Turn them using a round arrow icon;
- Use a Magic cube to fill the space between the wall and a roof (that way you'll be increasing the height of the walls).
Check out our video tutorial about creating a custom slanted roof in a Web app. However, main controllers are the same on all apps, so you won't have any issues reproducing these steps.