For this what I did was held B to Apply Spin to my shot, I then lined my cue with the central bottom of the ball, as far as it would go. I then used Fine Aim to raised my Cue to the very bottom of the White Ball, using the white aimer you can see when the ball will go off the table as the aimer will be straight off the table. Then all you'll want to do is hit the ball as hard as you can to ensure that the ball goes off the table.
I recommend doing this quite close to the edge as from the center of the table it may be difficult to get enough power on the ball.