Astounding this is happening.
This operator flys the "code share" SLC-GDL.
https://www.flightglobal.com/news/articles/unqualified-pilot-at-controls-before-e190-crash-at-d-456107/
The commission probing the accident found that a crew member travelling in the cabin had been allowed into the cockpit, but took the place of the first officer before the departure.
https://youtu.be/8qAeZRhuM-s