I want to publish a QR code that sends revision questions to my students' calendars. I want the dates set to be from the date of scanning (e.g. the first revision quesiton will be the next morning, then a couple of days later, then a week later etc.).

The questions will be in simple text format. The students will answer on paper, so no response is required from the code.

I want to be able to reuse the code for all of the subjects I teach, so I want to be able to set a different QR code with respective questions for all of my subjects. 

Finally, I will want to change the spacing and final end date of my revision programme, so that it ends before the exam date, which is different each year. 

Thanks,

Ben