> For the complete documentation index, see [llms.txt](https://help.smallbuilder.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.smallbuilder.com/smallbuilder-line-items/getting-started/connected-app-setup.md).
# Connected App Setup
{% hint style="warning" %}
**From version 3.0, the Connected App has been replaced by the External Client App (ECA).**
If you are on version 3.0 or later, please refer to the [External Client App (ECA) Setup](/smallbuilder-line-items/getting-started/eca-setup.md) page. The instructions below apply to Connected App environments on versions earlier than 3.0.
{% endhint %}
To perform metadata-related tasks such as **adding buttons to page layouts or retrieving custom labels in the builder**, additional configurations for the connected app in SmallBuilder Line Items are required.
### Step 1: Configure Permitted Users
1. In **Setup**, enter Connected Apps in the Quick Find box and select **Manage Connected Apps**.
2. Click **Edit** for **SmallBuilder Line Items OAuth**.
3. Set **Permitted Users** to **Admin approved users are pre-authorized**.
4. Click **Save**.
### Step 2: Assign Profiles or Permission Sets
1. In **Setup**, enter Connected Apps in the Quick Find box and select **Manage Connected Apps**.
2. Click **SmallBuilder Line Items OAuth**.
3. At the bottom, click **Manage Profiles** or **Manage Permission Sets**.
4. Select the profile or permission set responsible for **configuring the product using the builder**.
5. Click **Save**.