Adding a roof and/or an attic?

Here are the steps to add a roof or an attic:

1. Go to the 'Architecture' menu.

2. Select the 'Roofs' section.

3. Choose a roof.

4. Place the roof on the desired room.

5. Select the 'Scale' tool.

6. Use the arrows to adjust the roof on top of the room.

To add an attic:

1. First, create your attic floor.

2. Apply the roof following the steps above.

3. Select the roof and the 'Altitude' tool.

4. Drag the cursor down.