If you want to use one of the configured integrations associated with the form you are sharing, select Use Integration. From the Integration drop-down list, select the integration you want to use. Only the integrations configured for the current form are displayed for selection.
Note:
Fields pre-populated using an integration cannot be modified. If a pre-populated field from an integration is modified, the form cannot be submitted. As a best practice, is it recommended to configure these fields as read-only.