Hi,
When you want to configure a payment method, you go in the "System > Payment methods".
When you want to configure a shipping method, you go in the "System > Shipping methods".
And just below that two menu items, you found "System > Plugins" ; where you can configure the HikaShop plugins.
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.