This is a story about a student who finally got into the University of Notre Dame overcoming his weaknesses, and the former president is trying to help him out, and "He called in other priests to help Rudy.",
but is "call in" "call someone inside" or "request someone to do something"?
ex)He knocked on the door of the faculty residence hall and said, “Now, tell me how to get here.” The man who answered the door was a priest who was the former president of Notre Dame. He thought Rudy was distracted but soon he realized that he was a very passionate young man filled with desire and determination. He called in other priests to help Rudy. They helped him start the basic classes there. Instead of people saying he could not do it, he had people giving him a positive step he could make.
call in - Idioms - by the Free Dictionary, Thesaurus and Encyclopedia.
To call someone in doesn't mean they literally come inside.
When you call in the Marines, you don't want them in the room you are in, you want them out there doing their mission.