If 4 magazines are in one table, 4 TO's (table coccurences) would seem to be necessary. Pulling out Mag01 data a relationship involving it's name, code, or other field that shows the record you want when you do a find to see that data.
Join my Table? – Part One « FileMaker Weetbix
This video may help....
FM Academy - How To Create Dashboards with FileMaker Pro
Thanks David. I am still confused but will keep trying.