Want free shipping above certain value but not for ALL shipping

[GTR]

Above 20$ I want shipping for free for least expensive shipping, but it does shipping for free for ALL shipping methods.

Am I in the right place here?:

 

<div class="delivery_option_price">
                                                        {if $option.total_price_with_tax && !$option.is_free && (!isset

($free_shipping) || (isset($free_shipping) && !$free_shipping))}

 

Can I disconnect one shipping method from "free shipping" and attain normal price?