An owner is the person who owns the shop and has the absolute power and authorization of making all changes;

A shopkeeper, compares to an owner, has the authorization to edit the merchant’s information and see all transaction details. However, he does not have the authorization to withdraw PReds nor view other shops’ information and statistics.

While a cashier, has the least operating authorizations. He who could only view transaction records, receive money and refund to users. Besides, a cashier could not access to his account on website.