Hi, 

First of all, thanks to all devs for your great job!

I am a lecturer at a university and I use the quiz to make some tests. There are 2 issues I find that could be overcome with a new feature enabling the lecturer to set a customised timeframe for review options after the quiz is closed - either with delay in hours/days or with a  specified date (preferred).

I have the two following issues: 

If I set the test to finish just before the lecture starts and allow the students to see their grades after the test is closed,  students are disperse since they spend the beginning of the class (cross)checking their answers. Thus, a delay to allow them to see their grades would be extremely helpful to keep them concentrated . If it is a delay, I can just set it for the time the lecture's length and solved. But setting a date and time could also work well, and is probably the most flexible option, specially considering the following issue.

The second issue is that I sometimes have to lecture the same course to two different classes. Thus, if the students from the first class see the results after the quiz is closed, they will pass the solutions to the second class.

In both cases, the current workaround that I use is to simply uncheck all options from the review options. The issue is that then I fail to remember to check them afterwards, so it would be nice to make automatic, as a config option.

Perhaps, an initial idea to implement this, if you think it is interesting, would be to add another "review option" called something like "At a specific time after the quiz is closed". It would contain the same check list as the other review options but have an additional field where the specific date and time could be set (just as the timing dialogs). 

Thank you very much for your time and consideration,

Best regards,

Aleix