Hi,
In HikaMarket you can create orders directly in the back-end.
And with HikaMarket you can create orders directly in the front-end.
A customer in HikaMarket is a Joomla user, so if you want to login as another account, you have to find a Joomla extension which allow it.
But HikaShop is an e-commerce solution, it does not provide such special feature (which is related to Joomla and not really to an e-commerce system).
By the way, you do not need to login as the user to create him an order, you can already do it in the back-end.
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.