> ## Documentation Index
> Fetch the complete documentation index at: https://docs.nomadsarc.app/llms.txt
> Use this file to discover all available pages before exploring further.
# 🔢 Quantity Selector
How to display a **Quantity Selector** for each cart item on the Checkout using the **Cart Item Details -> Adjust Quantity** option.
## Guide
Create a new [customization](https://admin.shopify.com/apps/dynamic-checkout-customizer/customizations).
Choose **Cart Item Details** as the customization category.
Select **Adjust Quantity** from the available Cart Item Details options to allow customers to update product quantities directly during checkout.
Select **Render After Each Cart Item** from the available placement options.
Add one or more **conditions** to control when the quantity selector is displayed during checkout.
Configure the **Quantity Selector** settings, including the **Link Title** displayed for each cart item.
Change the **Status** to **Active** to enable the customization.
Configure the **Priority** (0–100) to determine the execution order when multiple customizations are eligible.
Open the **Placement** tab and copy the generated **Placement ID**. You'll use this in the Shopify Checkout Editor.
Click **Save** to store your configuration.
Go to your Shopify **[Settings](https://admin.shopify.com/settings) → Checkout**, select your checkout profile, and click **Customize**.
In the [Checkout Editor](https://admin.shopify.com/settings/checkout/editor), click **Add app block**.
Make sure the app block is placed in the same checkout placement you selected in Dynamic Checkout Customizer.
Select the **Checkout – Image Content** app block, drag it to the desired location, and paste the copied **Placement ID**.
Click **Save** in the Checkout Editor to publish the customization.
**Why does it matter?**
The **Cart Item Details → Adjust Quantity** customization lets customers update product quantities directly during checkout, reducing friction and making it easier to increase order quantities without returning to the cart. This can help improve average order value (AOV).