Market MS is created for mid-size markets and supermarkets. There are two main roles in the systems: Administrator and Operator.

Administrator can register new products (with automatic in transactions), cancel products if the market stops selling them, add in transactions when products are being bought from some source, manage users, see operators' records and get reports.
Operator can sell products, identifying them using barcode reader or entering the code manually. It is possible to print bills for each sale, have several parallel sales and cancel rejected out transactions.