# Setup Composite Items
**YouTube:** [How to Set Up Composite or Linked Items for Sales Bills?](https://www.youtube.com/watch?v=cknTgvWmFP0)
## How to Set Up Composite or Linked Items for Sales Bills?
In this tutorial, you will learn how to **create Composite (Linked) Items** and understand how they function during billing in Logic ERP.\
This feature is ideal for managing **combo products, bundled items, or kits**.
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### Open Composite Item Setup
**To Begin:**
* Go to the **Setup Module** from the main menu
* Navigate to **Set Other Item Details Section**
* Open **Setup Composite Items**
This window allows you to link multiple items with a main product.
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### Define Main Item
* Select the **Main Item**
* Press the Spacebar to select the **Main Item**.
The main item acts as the **primary product** for which sub-items will be linked.
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### Add Composite (Linked) Items
* In the grid below, define:
* **Sub Items (Linked Items)**
* These items will be automatically associated with the main item.
* Save Configuration
* Click **Save** to store the composite item setup
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### Enable Composite Item Prompt in Billing
Before using this feature:
* Open **Sale Voucher Configuration**
* Select the relevant **Billing Series**
* Go to **Other Settings 1**
* Locate and enable the option labeled as:
> **Prompt for Composite/Linked Items**
* Save the configuration
This ensures the system prompts linked items during billing.
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### Use Composite Items in Billing
* Navigate to the **Sale Bill Window**
* Create a **New Transaction**
* Enter the **Main Item**
**Composite Items Prompt**
* As soon as you enter the main item:
* A **popup window** will appear
* Displays all **linked (composite) items**
**Scan & Add Items**
* Scan the **barcodes of required linked items**
* Quantity updates automatically as you scan
* Makes the process fast and accurate.
**Finalize Entry**
* Click **OK**
**Result:** All selected linked items are **Automatically Added** to the Billing Grid.
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### How Composite Items Work
* One **Main Item** is linked with multiple **Sub Items**
* **During Billing:**
* System prompts linked items
* Allows selection via scanning
* Auto-adds them to the bill
Simplifies handling of bundled products.
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## Key Benefits
* Ideal for combo packs & kits
* Faster billing with barcode scanning
* Reduces manual item entry
* Ensures accurate item linking
* Improves billing efficiency
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### Final Outcome
You have successfully learned how to:
* Create **Composite Items**
* Link multiple items to a main product
* Use them efficiently during **billing**
Your billing process is now smarter, faster, and perfect for handling **bundled or combo products**.
