> ## Documentation Index
> Fetch the complete documentation index at: https://help.extendcommerce.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Overview

The Extend B2B Address Book App allows B2B customers to add, manage, and reuse multiple shipment addresses directly from their customer account and select any saved address at checkout.

For merchants, the app also provides an Additional Addresses Block that can be added in the Shopify Admin under Company Locations, allowing internal teams to view shipment addresses in a structured and pinned layout.

## App Capabilities at a Glance

### Customer Account

* Customers can add, edit, and delete shipment addresses

* Addresses are saved to the company location

* All saved addresses are reusable at checkout

### Checkout

* Customers can select any saved address from an address selection modal

* Customers can edit addresses during checkout

* Reduces repetitive address entry and checkout friction

### Shopify Admin (Addresses Block)

* Merchants can add an **Addresses Block** to Company Locations

* The block can be pinned for quick access

* Displays shipment addresses added by customers