Customers who are the end users of the updated system are very instrumental in the process in that their inputs will help to determine which payment options are available to.
For example, if the restaurant has global outlets clients from different locations or regions will give very different payment options that are accessible to them. Whereas, Google Pay, PayPal and Apple Pay may be available in one region, in other regions you will find other dominant payment options that clients prefer.
So, as far as clients are involved there should be regional representation, so that the management and development teams can know what is available to the clients.
