@Eze ,
Nice work! Again, I love the way people are challenging themselves relative to their own skill sets, in your case incorporating the custom M code for renaming columns.
My one strong suggestion here would be to use the EDNA Extended Date Table, rather than the CALENDARAUTO generated date table. When we get to time intelligence in a few weeks, I think you will find that the former offers some incredible power (particularly relative to the offset fields) that will greatly simplify your DAX.
Were you able to get your registration straightened out? If not, let me know and I will make sure we get you into the session.
Thanks for participating!
- Brian