Hi,
That you are pointing is a product custom field. It allow to create new "columns" for your products with a specific type (text, date, list..).
You can add a "text product custom field" and modify your product listing view in order to display this custom field.
You can also use the product description with the "read more" separator and edit the product page view in order to not display the begin of the description (before the "read more" tag separator). So you will have two different descriptions in a single field.
Product custom fields required a commercial version of HikaShop. It gives you a good flexibility but it is possible for your case, to it without.
Regards,
Jerome - Obsidev.com
HikaMarket & HikaSerial developer / HikaShop core dev team.
Also helping the HikaShop support team when having some time or couldn't sleep.
By the way, do not send me private message, use the "contact us" form instead.