In the attached map, can someone tell me how they got all the subdivisions in the legend to include the grid area where the subdivision can be found?
Thank you for your time!
That's not actually a legend. It's commonly known as a feature index (or more commonly, a specific kind is a street index, but the idea is the same).
You might find Ben's question and Yovav's answer in the thread at https://community.esri.com/people/Yovavzsystematics-co-il-esridist/blog/2014/08/05/creating-grid-index-for-data-driven-pages relevant.
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