If you want to create a shape such that it has a hole in the middle of it, first create the outer shape, then create a shape in the middle of it which matches the hole you want to create. As soon as you complete this inner shape, you will notice that only the Shape 1 - Shape 2 part is now shaded, as the Shape 2 is now treated as a hole.

One point to note here is that even though this kind of a shape is created using two different shapes, the end result is one single shape. You can edit this shape by editing any one of the internal our external boundary edges.