# How to control customer selection and required last names

Register customer settings determine whether employees see the customer selector and which customer information is required.

## Hide customer selection

1. Open **Settings > Register**.
2. In **Customer**, enable **Hide Select Customer**.
3. Save the settings.

Use this when the checkout workflow should proceed without presenting the normal customer-selection control.

## Require a selected customer

1. Disable hiding if the selector should remain visible.
2. Enable **Select Customer Lock**.
3. Save the settings.

This prevents employees from continuing with the walk-in customer when a named customer must be attached.

## Require the customer’s last name

1. Enable **Last Name Mandatory**.
2. Save the settings.

After this is enabled, customer creation and editing workflows require a last name where supported.