Hello,
1 - There is no such feature in HikaMarket ; it would require some modifications in the core to add that feature, I don't see any current HikaMarket trigger which would help to perform the implementation using a custom plugin.
2 - Yes ; the development is already made but we have other task in progress for HikaMarket 1.8.0
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.