Hey there, Gregg!
That’s a great question but, I’m afraid getting that to work would amount to modifying the plugin’s core code, which is something we wouldn’t recommend.
The code in question can be found here if it’s something you want to look deeper into: /the-events/calendar/lib/io/csv.
I see that this is a fairly popular feature requestย and that there is a ticket in our system to look at this closer. It would be great for you to add your vote here so we continue to see the demand for something like this.
Does this help answer your question? Please let me know. ๐
Cheers!
Geoff