Add a new column in the Hikashop Orders listing

-- HikaShop version -- : HikaShop Business 2.3.5
-- Joomla version -- : 3.4.8
-- PHP version -- : 5
-- Browser(s) name and version -- : Firefox

Hi,

We are using hikashop with JMS2WIN multisite extension. So, for both sites the orders, products, customers are same but the frontend template and few settings are different which is handled by multisite extension.

We want to create a new column in admin Orders listing to distinguish order source, we have a parent site (domain.com) and child site (child.com), so we want to add a entry (domain name) on the order table when order is creating and want to show that column in order listing. What is the best way to do it.

We tried by creating a custom field for order using Hikashop custom fields and the column is created on order table but not sure how to add domain name at the time of order creation.