Hello,
I'm sorry but I can just see two questions in your message and they are related to the HikaShop checkout, not HikaMarket features.
For your question about HikaShop and his checkout, please post in the HikaShop section of the forum.
If you have specific questions for HikaMarket, like the configuration of the "shipping per vendor" ; feel free to ask it in that forum section.
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.