> For the complete documentation index, see [llms.txt](https://docs.rmhpos.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.rmhpos.com/store-manager/manage-items/lot-matrix-items/setting-up-lot-matrix-items.md).
# Add lot matrix items
{% hint style="info" %}
It is recommended that you set up suppliers before you enter a large number of items.
{% endhint %}
1. Click **Merchandising**.
2. Click **Items**.
3. To add a new item, click **New**.
4. Select **Lot Matrix Item** and click **OK**.
5. In the **Lot Matrix Lookup Code** field, type the UPC code or a unique lookup code for the lot matrix item.
6. In the **Description** field, type the name or description of the lot matrix item.
7. Under **Data Operations**, click **Add**.
8. Select one of the following:
* **Select an existing item to add**: Select this option to add items that already exist in the database.
* **Create a new item to add**: Select this option to launch the New Item Wizard and add a new item to the database.
9. Click **OK**.
10. If you chose **Select an existing item to add**:
1. (Optional) Click a column heading, click in the **Find** field, and enter a search term for the item.
2. Double-click the item, or select the item you want to add and click **OK**.
11. If you chose **Create a new item to add**:
1. On the **Welcome** screen of the **New Item Wizard**, click **Next**.
2. From the **Type** drop-down, select **Standard**.
3. For **Lookup Code**, enter the item's UPC or a unique item lookup code.
4. Enter a unique **Description** for the item.
5. Enter the initial on hand **Quantity** for the item.
6. Enter a **Price** and **Cost** for the item.
7. Select a **Department**, **Category**, and **Supplier**.
8. (Optional) Enter the **Bin Location**.
9. Select the **Bar Code** type.
10. Select the default **Item Tax**.
11. Click **Next**.
12. Click **Finish**.
13. A confirmation message displays. Click **Yes** to continue.
12. Continue adding items until all required items are included in the lot matrix item.
13. Click **Save And Close**.
---
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