Did you know that a simple 2D shape can be modified, and then converted into a 3D object? In this example, we will make a Deck, and a Patio, that both have a curved edge. Go to the “Detail” tab.
Draw a rectangle on the screen, to your desired size. Select the rectangle that you just drew, with the selection tool/ white arrow. Select “Points” in the “Edit Level” selection field.
Now to make the curved edge, we will use the “Fillet Corner” tool.
Click on the bottom left corner, of our shape and drag it upwards.
Once you get it where you want it, select the shape again, with the selection tool, and hit the “Convert To” button on the right side of the screen.
In the popup menu we will select either a Patio or Deck.
Once converted, you will now be able to see the object in your 3D Live View screen. Now you will be able to add different materials.