You can add time for students with accommodations via Canvas Quizzes. Create your Canvas Quiz and under the ‘Details’ tab, scroll down to the ‘Assign’ section. Create a new assignment group for the students with the time accommodations. While assigning the timing for the quiz, add the different time deadlines for the 2 groups (Accommodation students, everyone else).
For more information and assistance with Canvas Quizzes, please contact the LFS Learning Centre at it@landfood.ubc.ca.