Hi,
The best is to make an override for the view "product | show_block_caracteristics" in order to add the appropriate columns.
HikaShop lists the "main columns" and the characteristics in the table. If you want to add a column, you can add it in the view.
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.