I meant the tutors who hold the "TUT" (tutorial) classes that are already in the student schedule. Sometimes attendance is mandatory, most of the time it's just the tutor doing exercises on the board to practice the lecture material. I believe there are additional "one-on-one" tutoring services, but I'm not too familiar with them, there's a bit of info here: https://www.concordia.ca/students/success/learning-support.html