Hi @turnipseed ,
If you use the Classic Quizzes tool, I'd recommend the Once I publish a timed quiz, how can I give my students extra time? guide. It discusses how to give select students more time for a quiz. If you use the New Quizzes tool, check out the https://community.canvaslms.com/docs/DOC-26225-how-do-i-moderate-a-students-assessment-attempt-in-ne... guide for similar instructions. If you have any further questions, feel free to reach out!