Hi,
Because the feature is something provided by HikaShop Business (a commercial edition of HikaShop), there is no "tricky way" or "free plugin" to do so.
After that, HikaShop is an open source software and you have the possibility to create your own custom plugins, create custom code in the views or modify the HikaShop core.
www.hikashop.com/support/documentation/6...r-documentation.html
www.hikashop.com/support/documentation/1...ize-the-display.html
You have to possibility and the right to implement such feature yourself in your website.
But, the support team won't be able to help you to implement something which is already available in a commercial version of the software.
HikaShop starter allow you to create a full working e-commerce store with a lot of feature and a huge number of free (payment, shipping, etc) plugins but the team need to let some feature for the commercial edition in order to live and continue to work on the software.
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.