...
In additions to the previous list of events, WFIO reports more custom events as listed here. However in order to start receiving and measuring these extra events in our facebook panel we need to add them to our facebook events.
Create Your Own Facebook Custom Conversions
If none of the standard event codes match the information you want to track, you can create a custom conversion. To do this, navigate to your Facebook pixel page in Events Manager and click the Custom Conversions tab on the left. In the upper-right corner of the page, click Create Custom Conversion.
...