Hello.

I wrote a KB article dealing with similar situation. Its principle should be the same and you should be able to apply it for your scenario. The article is here.

Best Regards,
Radek Macalik

To go a step further from what Radek stated, you can make it very dynamic so the content editor can maintain the topics and emails associated with the topic. Simply create a Custom Table with 3 fields, ItemID (Primary Key), Topic (text), Email (text). Populate the table with data. Then on your field use a Select query and simply do

SELECT [Topic] AS [Name], Email AS [Value] FROM Your_CustomTable ORDER BY [TOPIC].