Can Buyer Leave custom note on purchased product in Hikashop?

I was not able to find information in documentation so am asking here:
Is it possible to allow buyer to leave custom message to seller?
For example if he wants to customize purchased item he will right it in that field whiler purchasing and seller will get this message with order details.
This is implemented in Ebay and Etsy and is very useful.
How is the situation with Hikashop?

!!!edit I found that it is done using custom field but can anyone explain how? I was not able to display field on purchase page, but on orders list in backend fields collumn was added.

Thanks