When you clicked 'Make Graph' a new graph will have been made. This is stored internally in the TeeChart control as a 'series' - here it's called 'Series0'. In the tutorial, the graph was set as a two dimensional chart. But if you want to see how it looks as a three dimensional chart, just click the 'General' tab and check the '3 Dimensions' check box. You'll see immediately that the graph becomes a three dimensional version of the existing graph. Now you can enhance the 3D effect by altering the 3D% value from its default value of 15 to, say, 60. Again you'll see the effect immediately.