External Authentication - Automatically Creating Accounts

Hello, all! This is my first post and I hope this is the correct place to put it. I'm hoping by posing this question, someone, somewhere has done it and may be able to point me in the right direction. I work for a University and we set up our cPanel instance with ADFS. We have the authentication working and I know with the API, I can link the external account with the account locally created. I was reading the documentation that is located