Hi Steven,
Thanks so much for reaching out!
The only way to capture that information via attendee export would be to have your attendees add in that information with their ticket on the front-end, which would then appear in the Details column of your export.
You can also add that information in manually after ticket purchase if you used a third-party plugin like User Switching.
You can also add this idea to our Feature Requests, as we tend to implement ideas based on customer feedback, so your input is greatly appreciated:
https://tribe.uservoice.com/forums/195723-feature-ideas
Let me know if you have any other questions on this topic!
Thanks,
Jaime