# Add Sub-Lookup

Adding a **sub-lookup** allows you to create hierarchical relationships within your existing lookups.

## **Steps to Add a Sub-Lookup**

1. **Navigate to the Lookup Page**
   * Click the **Data** icon in the **Primary Left Panel**.
   * Select **Lookups** to open the **Secondary Panel**, displaying the list of defined **lookups**.
2. **Select the Lookup to Configure**
   * Click on the desired lookup from the list in the **Secondary Left Panel**.
   * The **lookup** page will open on the right side of the panel.
3. **Initiate Adding a Sub-Lookup**
   * Click on **New Sub-Lookup** from the **Tabs & Actions Bar**.<br>

     <figure><img src="https://3492271129-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fj1Dw8FtaGIetY1F600nV%2Fuploads%2FIuoJ6sP0Y83TOIiIbYz9%2Fimage.png?alt=media&#x26;token=1596b4a0-5ada-496b-95f5-1bded392b2b6" alt=""><figcaption></figcaption></figure>
4. **Define Sub-Lookup Type**
   * Select **Type**:
     * **Self:** Select this option if the sub-lookup is a self-referencing lookup. No further details are required.
     * **Other:** Choose this option to reference another existing lookup.
       * A new field will appear to select the sub-lookup from a list of all other lookups available in the system.
5. **Submit the Sub-Lookup**
   * Click **Submit** to create the sub-lookup.<br>

     <figure><img src="https://3492271129-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fj1Dw8FtaGIetY1F600nV%2Fuploads%2F0j3TBkEtE67XzV6Z65ui%2Fimage.png?alt=media&#x26;token=09cbe1c6-23d8-4bd0-9af8-09b80e58366f" alt="" width="214"><figcaption></figcaption></figure>
   * The new sub-lookup will be added to the **Sub-Lookups** table under the **Sub-Lookups** tab on the lookup page.<br>

     <figure><img src="https://3492271129-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fj1Dw8FtaGIetY1F600nV%2Fuploads%2Fn4eiroXghgeYOGlmNis4%2Fimage.png?alt=media&#x26;token=58d6560e-f037-4ed1-a878-282ed5e7c9ae" alt=""><figcaption></figcaption></figure>
