pre-sale question about client purchase histories

this is a pre-sale question. i looked through the forum but really didn't have my question answered. I am looking to use hika shop for a private "memebers only" shop...we want he registered members to see their order history when they log in through joomla, we don't want them to log in a second time to access hikashop just to see order history. Is this possible?, do i need a plug? how does this work? We would be purchasing the pro version of hika shop to build this section of the site.