Hi,
If you're using the plugin "paypal adaptive" in "classical mode", the custom will pay directly the vendor if the vendor have a valid paypal email configured.
If you are using the plugin "paypal adaptive" in "adaptive mode", the customer will pay you and the vendor in the same time ; but it requires a special "paypal application" account in order to use this special mode.
Otherwise, you can still use the HikaShop "paypal" plugin but you have to change your HikaMarket configuration in order to specify that the "market mode" is "store paid directly" because it will be the case.
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.