I am attempting to show the 13 week average but want to allow any criteria selection to adjust this total (including the dates (i.e. users can look at last week or the previous compared to the 13 week avg)). I think the answer is close but my troubleshooting is going in circles.
I have the 13 weeks set. This appears complex but I only want to show the last 13 weeks in an environment which has future ship dates.