# Field library

### To [create](https://happybara.gitbook.io/streamly/reference/streams/modify/field-library/create) or [modify](https://happybara.gitbook.io/streamly/reference/streams/modify/field-library/modify) the fields available in [form builder](https://happybara.gitbook.io/streamly/reference/streams/modify/form-builder) for a [Stream](https://happybara.gitbook.io/streamly/concepts/stream), select:classical\_building:`Field library` from the overflow menu (<img src="https://515986723-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-M8LPwlH5mb9FAOH85oP%2F-M9jiBIWlAlkxr_q36Y4%2F-M9jiC-hBUmQLo6YZeMn%2Fimage.png?alt=media&#x26;token=4a5de23a-e617-4ed3-b3cf-2020f5b30e83" alt="" data-size="line">) in the **`Streams`** section of the app home.

#### To **create** a field, select a [**field type**](https://happybara.gitbook.io/streamly/reference/streams/modify/field-library/types) from the menu at the top of the modal.

{% content-ref url="field-library/create" %}
[create](https://happybara.gitbook.io/streamly/reference/streams/modify/field-library/create)
{% endcontent-ref %}

#### To **modify** a field, click the :gear:`Edit`  button below the field.

{% hint style="warning" %}
[**Some**](https://happybara.gitbook.io/streamly/reference/streams/modify/field-library/types) fields cannot be modified.
{% endhint %}

{% content-ref url="field-library/modify" %}
[modify](https://happybara.gitbook.io/streamly/reference/streams/modify/field-library/modify)
{% endcontent-ref %}

#### To **delete** a field, click the :bomb:`Delete`  button below the field.

{% hint style="warning" %}
[**Some**](https://happybara.gitbook.io/streamly/reference/streams/modify/field-library/types) fields cannot be deleted.

Deleting a field that is **currently** on your [**Request**](https://happybara.gitbook.io/streamly/concepts/request) form will **remove** it from the form and may cause **changes** to the field in integrated components ([**Sheets**](https://happybara.gitbook.io/streamly/reference/integrations/tools/smartsheet)).
{% endhint %}