## Zoho Commerce Help Documentation Index Access the complete documentation index at: https://www.zoho.com/en-fr/commerce/help/llms.txt Use this file to discover all available documentation pages before proceeding. # Orders Preferences You can configure the preferences of the Orders module in Zoho Commerce to define when invoices should be generated, when orders should be confirmed, and a return window for customer purchases. * [Generate Invoice](/en-fr/commerce/help/orders-preferences/#Generate-Invoice) * [Confirm Order](/en-fr/commerce/help/orders-preferences/#Confirm-Orders) * [Return Window](/en-fr/commerce/help/orders-preferences/#Return-Window) * [Field Customization](/en-fr/commerce/help/orders-preferences/#Field-Customization) ## Generate Invoice In this section, you can choose when to generate invoices for sales orders. Here’s how: * Log in to your Zoho Commerce organization. * Click **Settings** in the top right corner. * Navigate to **Orders** under _Sales_. * Select the **General** tab. * In the _Generate Invoice_ section, choose your preferred option. You can choose from **On Order Confirmation**, **On Shipment Generation**, and **Manually**. ![Generate Invoice](/commerce/help/orders-preferences/generate-invoice.png) * Click **Save**.  ## Confirm Order In this section, you can choose when to confirm sales orders. Here’s how: * Log in to your Zoho Commerce organization. * Click **Settings** in the top right corner. * Navigate to **Orders** under _Sales_. * Select the **General** tab. * In the _Confirm Order_ section, choose your preferred option. You can choose from **Upon Payment**, **Upon Receiving Order**, and **Manually**.  ![Confirm Order](/commerce/help/orders-preferences/confirm-order.png) * Click **Save**.  ## Return Window You can set a return period to decide how many days after delivery a customer can return an item. Here’s how:  * Log in to your Zoho Commerce organization. * Click **Settings** in the top right corner. * Navigate to **Orders** under _Sales_. * Select the **General** tab. ![Return Window](/commerce/help/orders-preferences/return-window.png) * In the _Return Window_ section, enter the **Return Period** for items in days. * Click **Save**.  **Note:** Return period entered during item creation will overwrite this value. ## Field Customization You can add additional fields using the Custom Fields feature. Read our help document on Field Customization to learn more.