Hi Maris!
I found some info for you on Facebook’s Business page
The Facebook pixel code with a standard event.
1. Your website’s original code: Paste the Facebook pixel code between the <head> and </head> tags of your web page. You may already have other existing code between the head tags, so just place the pixel code underneath that, but above </head>.
2. Your Facebook pixel base code: Your Facebook pixel code will look like the diagram above, except your pixel ID will be different from 1234567890.
3. Your standard event code: Within your Facebook pixel code, above the </script> tag, paste the Standard Event code that’s relevant to your page (ex: Complete Registration, Add To Cart). You’ll need to do this for every page you want to track.
I hope this information is helpful to you.
Let me know if it’s not what you’re looking for.
Cheers!
~Josh Cothen