To set the underlying and choose a layout in the Option Chain:
- Type the underlying symbol in the box in the top-left of the window, hit Enter and select the product
- Choose an Option Chain layout from the "blade" to the right of the symbol, and click Calls and Puts to select a Spread Template (Horizontal Spread, Vertical Spread or Diagonal Spread).
More information on the Option Chains window can be found in our Users' Guide.