More Information Field on Checkout

We are using Hikashop Essential and want to have a custom form on the checkout for a user to add more information to an order.
I've tried adding using the custom fields, but it's not showing up on the checkout.

Edit: OK, well it appears I may need the business version, but the website clearly shows "Custom fields for addresses and user information" and "Totally customizable checkout process" as both the same level for Essential and Business. So I feel we should be able to do so in Essential.

Hi,

You can create custom fields of the type user and/or address with the essential edition via the menu Display->Custom fields. Make sure they are published and the front end activated. They will appear on the checkout when not logged in.
For the "Totally customizable checkout process", it refers to the checkout workflow option of the configuration and the other numerous options of the Checkout tab of the config.

Finally, in the Business edition, you will indeed have additional types of custom fields and more particularly the type "order" which is attached directly to the order and displayed on the checkout with the view "fields". That's not mentioned on the feature list but it's on the Business edition page:

Custom fields for orders and entries as well as custom file type

Ok thanks, the site's feature list makes it sound like this in either version.