Creating a calculation similar to the following window_max(max(Date)) can probably be used, possibly combined with a dual axis so that a point can be laid on top of the box plot. *Note you may be need to change how the calculation is computed may need to be adjusted.
Hope this helps!
Hi Tracy, thanks for the reply. Can you elaborate on the custom calculation field? I think you mean that I should match and return the data point that corresponds to the max date. If so, what would this calculation look like?