Hi,
This feature is not implemented in HikaMarket but, thanks to the plugin system, it is possible to create it.
HikaMarket use triggers, like HikaShop and there is a trigger called "onAfterVendorCreate".
It would be possible to create a little plugin which would catch this trigger and create new products for the new vendor.
So, each time a vendor would be created, some products would be duplicated and assigned for the new vendor.
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.