How can I change the field from which the name in the URL is pulled from?
It is currently added from the user name of the user which cannot be changed. I want it to pull the name in the url from a different field.
This is native to WordPress and not theme specific. You might try a plugin, but there's not much I can do from a theme standpoint - https://wordpress.org/plugins/edit-author-slug/.
Let me know if you have any other questions about this. Kind Regards,Charles