A method may include: causing a point-of-sale terminal processing a transaction to display a machine-readable code, the machine-readable code encoding a web address; receiving a request from a device that scanned the machine-readable code, the request received at the web address; in response to receiving the request, causing the device that scanned the machine-readable code to output an interface; receiving, through the interface, an input of an indication to separate the transaction into multiple transaction parts and one or more parameters indicating how the transaction is to be separated; and sending, to the point-of-sale terminal, a message that configures the point-of-sale terminal to separate the transaction in accordance with the one or more parameters.