Hi,
The answer above does not fully address @pcharles question. I ran into this issue with an instructor recently and I was really flabbergasted to discover that you cannot add extra time for a student when you are reopening a timed quiz for them. If the quiz auto-submitted because the timer ran out, it is not possible to reopen it and give them extra time to continue with that attempt. I can't imagine why this constraint exists. I understand that an instructor may not want to give a student any extra time for a quiz that closed before the timer expired but it seems likely that one of the most common scenarios for reopening a quiz is that a student encountered some issue out of their control, ran out of time, and needs a chance to finish their quiz attempt.
Is there a plan to address this limitation? Is it on the road map? If it's not, could we get it on there?
I contacted customer support to make sure that I had not missed something when I was testing this. They confirmed that the functionality I was looking for does not yet exist. They said,
This is a follow-up to our call earlier. You called Canvas Support today because you want to grant more time to an attempt for a quiz submission. You can reopen an attempt, or grant extra time, but can't give more time to an attempt that already used up all their time or already submitted. I hope you have a good rest of your day!
Matthew
L1 Tech Support
Thank you,
John Willingham