I am currently using magento 1.9 I am using IWD's one page checkout extension version 4.0.5(latest). I want to add a custom drop down field to the IWD's checkout page e.g. Where did you here about us ? Customer must select one of the answers. The answer then should be saved to quote and order table. And also must be visible in the order info from the admin panel (sales->orders). I have managed to achieve the similar on magento's default checkout and it is working perfect for me. But now I want to add the similar field to IWD's checkout.
My default magento checkout : My order :
I want to achieve same for the extension's checkout page.
More than 10,000+ stores are using that extension. Someone must have been able to sort it out. Looking for good support. Thanks I am a beginner at magento though.