I have a quiz that has an Availability start time of 10:00 and an Availability end time of 10:55. The quiz has a time limit of 50 minutes. If I have students who are eligible to receive extra time, in addition to giving them the extra time, do I also need to change the Availability end time? My understanding was that the Availability start and end times only determine when a student can start the quiz and as long as they start before the end time they will get the entire time limit to complete the quiz. Does this behaviour change if the timer is set as "synchronous"? If a student gets 100 minutes to write and I don't change their end time will the quiz end at 10:55?