Go to your Facebook Pixel tab in Ads Manager.
Click Create Conversion > Track Conversions with Standard Events.
Copy the Initiate Checkout event code (i.e. fbq('track', 'InitiateCheckout');)
Go to the Facebook Pixel Base Code for Checkout Page that you created in Step 8 of the previous article and paste the event code above </script> (refer to the video below for the exact location where you can insert this event code)