ELMS-Canvas allows instructors to give individual students extra time or attempts on quizzes, however, extending time on quizzes for specific students will only work if the instructor has not put an availability restriction on the quiz that does not allow for the extended time. For example, if the quiz is only available from 10-11 am, it will close at 11 am for everyone. Quiz availability supersedes any time extensions made for specific students.
Quizzes must be published in order for this feature to be available to modify its settings.
NOTE: The Student Extensions box may look different if your quiz has no time limit. The Extra Time on Every Attempt option is not present for quizzes without time limits.