1. Open the visualization 
  2. Click the pencil icon 
  3. Click the icons at the bottom of the toolbox to explore your drawing options
  4. Click the icon for the shape you want to add
  5. Fill out the fields for the shape
  6. Click on the visualization to place the shape; drag your cursor to expand the shape 
  7. To change a shape you drew, click on the shape
  8. To delete a shape, click on the shape and press delete on your keyboard