Square is a payment processor for MassageBook transactions. This means that the total due during checkout is sent to Square to be paid for using a Square payment method. Square does not offer up your Product or Service Menu during checkout. If you want to charge a different rate in Square than what is due at checkout in MassageBook, simply discount the total in MassageBook prior to connecting to Square POS. You can then choose from any Square payment method to complete the transaction.