Enrollment User Report w/ ILT Fields

Summary

Need help setting up properly!

Content

Hello,

This is my first time attempting to create a custom BI Report.  Basically, I would like to run a report on an enrollment that will show User, Enrollment, Event, Track, & Session fields (output Excel).  I attached an image of my attempt, and it's not working for me.  It wasn't clear to me what enrollment field contained the User ID.

Help would be appreciated!