There are three types of sync in the cashier app:

1. Sync Users: This is found at the login screen. You can use it to sync users and Roles.
2. Sync Customers: This is found in the customer's popup which can be triggered by tapping on the Add Customer button on the left of the order section. You can use it to download any new customer info from the console.
3. Sync Data: This is shown in the expanded list which is triggered by tapping on the Home button at the bottom of the register page, which is responsible for syncing the menu and configuration from the console.