Hi,
When you edit a product in HikaShop (and in HikaMarket), you can assign some "packs" to the product.
Having a pack means that when someone will buy the product, a serial will be generated (or taken from the database).
The integration between HikaMarket and HikaSerial is mostly on the product edition part.
The HikaSerial features are not available from the front-end for the moment.
To be more precise, nobody asked for it so we didn't make the implementation ; but if you have a concrete project and you need some specific features, we will be please to know more about it in order to imagine and develop a solution in HikaSerial/HikaMarket.
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.