adding fields, order table missing

-- url of the page with the problem -- : local
-- HikaShop version -- : 2.3.2
-- Joomla version -- : 3.3.3
-- PHP version -- : 5.4.4
-- Browser(s) name and version -- : Firefox

I'd like to add a custom field to the checkout but I can't choos 'order' in the table options.The options are:
Adress, user, Product, Category, HIKA_CONTACT.
But no 'Order'...

HikaShop Essential: 2.3.2

Anyone?

Hi,

Order custom fields are provided by HikaShop Business.
You got the essential version so you don't have access to the order or item custom fields.

Regards,