A family of Microsoft spreadsheet software with tools for analyzing, charting, and communicating data.
Hi Adam,
Actually, I agree with Patrick, using the Pivot Table and Pivot chart is the most efficient method to achieve what you request.
However, if you still want to achieve the effect like the screenshot you attached. I have made a sample demo Excel workbook. Please check the link below:
This might be not the most simple way, but it does the trick. The drop down list on the cell I4. And the new user name added to the table will appear in the F column and drop down list automatically.
Hope this could help you. Let me know if you have any concern on this.
Regards,
Alex Chen