# Product Bundle
**Product bundle** helps customers add additional products besides the main product. They will get a discount when adding to cart all products in the bundle. This is also a way to boost your sale.
## 01 - Set up Product Bundle
### **Create a Metafield for Bundle:**
1. From your Shopify admin, go to **Settings** -> **Custom data**.
2. Click **Products → Add Definition.**
3. Please enter correct **Namespace and Key** as we noted below.
```
Name: Grouped Sub Product or any name.
Namespace and key: custom.grouped_sub_product
Select content type: List - Product
```
### How to insert content for Product Metafields?
1. From your Shopify admin, go to **Products -> All products**.
2. Find and choose the product that you want to edit.
3. In the **Metafields** area, please enter discount value which you just created for "**Bundle Discount Rate**" field.
{% hint style="info" %}
You can use [Bulk Editor](https://halosoft.gitbook.io/ella-7-documentation/product-page/broken-reference) to edit multiple products.
{% endhint %}
{% hint style="info" %}
To get handle of sub products, please go to Admin -> Products -> choose the product you want to add in bundle -> Scroll down at the bottom to see **Search engine listing preview** -> click **Edit website SEO** -> copy **Product handle**. [Learn more](https://shopify.dev/api/liquid/basics/handle).
{% endhint %}
## 02 - Set up Discount Rate For Product Bundle
### Create A Collection with a group of products:
1. From your Shopify admin, go to **Products -> Collections**.
2. Create a collection which ***contains all of products in the bundle you created*****.** The name of this collection will be: **BUNDLE-xxxxxxxxx** (with **x** will be ***product ID of main product in bundle***).
### Create A Discount for Bundle
1. From your Shopify admin, go to **Discounts. ->** Click **Create discount**.
2. Create a discount for the bundle collection you just created. The name of this discount will be: **FBT-BUNDLE-xxxxxxxxx** (with **x** will be ***product ID of main product in bundle***).
### **How to add a new Metafields?**
1. From your Shopify admin, go to **Settings** -> **Custom data**.
2. Click **Products → Add Definition.**
3. Please enter correct **Namespace and Key** as we noted below.
```
Name: Bundle Discount Rate or any name
Namespace and key: custom.bundle_discount_rate
Select content type: Number
```
### How to insert content for Product Metafields?
1. From your Shopify admin, go to **Products -> All products**.
2. Find and choose the product that you want to edit.
3. In the **Metafields** area, please enter discount value which you just created for "**Bundle Discount Rate**" field.
## Customize Product Bundle
1. From your Shopify admin, go to **Online Store** -> **Themes**.
2. Find the theme that you want to edit, and then click **Customize**.
3. Choose **Products** from the dropdown window.
4. Click **Product information ->** scroll down to **Product bundle**.
