Prerequisite: You must accept the lead form ads terms of service. To do so, please follow the steps here.
Reduce friction for interested buyers by adding lead forms to your Google search ads.
Note: Unlike social, the lead form does not replace the link to your landing page. The option to fill out the lead form displays below your search ad.
Create lead gen form
You can create and add lead gen forms at the:
Ad level
Go to the Library > Google Assets > Ad Extensions Library.
Click Add New Extension.
Click Lead Gen Form.
Fill out the fields.
Click Save.
Add lead gen form at the ad-level in your campaign.
Account level
Go to the Library > Google Assets > Default Ad Extensions.
Click Enable in the Lead Gen Form box.
Fill out the fields.
Click Save.