If you have created a facebook Campaign, with the objective of Conversions; Facebook will give you a conversion code / Pixel code that will need to be installed onto your website.
After you have created the code
Click on Email Pixel Code. Now scroll down to step 2 and copy the code.
Now you need to login to your CRM System and then click on Websites and your domain name.
On the left hand side of the screen you will see an option Global Settings in the Grey Box.
Now you will scroll down to the bottom of the page, and you will paste the code you just copied into the Conversion Code Box. Then you want to click on the Save button at the bottom.
NOTE: You may see coding in there already for Google. That is okay, just paste the code you copied at the bottom of that Google Code.
NOTE: You can only have one facebook pixel code in this section.