I wasn't sure exactly what you are looking for, so I created a workbook with a couple of possible examples using the sample data set Superstore. If either of those look right, I would be happy to provide some instructions.
If neither of those views is what you are looking for, maybe you can create a mockup? Or make an example workbook with Superstore to demonstrate the issue?
I hope this helps
Orders shown on map.twbx 1.2 MB
Esther the "Highest Selling Sub-Category" tab is perfect, thank you! I am going to look at the calculation you used and try to reverse engineer it for my dashboard. I will let you know if I have any questions, but I really appreciate the help