Convert Text field to user field automatically

I am using the Eventy template, and am creating an event aggregation site. I am manually uploading csv’s of events, with organizers as a field in the csv. The only way to make the uploading easy is to upload the field Organizer as text, but I want to also have an Organizer user that has an organizer profile.

Is there a way for me to convert the text field i upload to create an organizer user? Please point me to any references that you think would be helpful. Thanks!