Hi,
First, I thought that your question was an HikaShop question (and not an HikaSerial one) so I moved your post to the right category.
HikaShop does not have multi-vendor features but a new component would be release in a few weeks : HikaMarket.
This component would add some new features in HikaShop like the front-end edition and multi-vendor (with notifications).
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.