Cashier: the everyday counter
Cashiers focus on billing and the tasks permitted to their role. They do not receive the same financial-reporting or management access as managers and admins. Review the POS permission settings before deciding how much discretion the counter should have.
Branch manager: their location
Managers can handle supported branch-management tasks, including products, stock, customers and reports within their permitted scope. Returns and sale voids require an authorised management role rather than a cashier account.
Admin: the wider business
Admins manage the business-level setup and broader access. Keep this role limited to the right people. An admin login is not a convenient replacement for setting up cashier accounts, especially when several locations are operating.