There are two ways off drawing the balls. These are manually, and automatically.
When drawing the balls manually, you start the spinning of the cage, and drawing the ball. Then repeat until the game is over.
You can also set the game to draw the balls automatically. When you choose to allow the game to draw the balls, it will start and stop the cage, and draw the balls. You can choose from 3,5,7, and 10 second intervals