What is the purpose of "A students set works in an hourly interval max days per week" option in the Time menu-> Students and how does it work?
This can be used for example to limit the afternoon lessons.
Example:
You have 5 days per week.
Year 5 has 30 hours per week. So they can have 6 hours per day. 5 days * 6 hours per day = 30 hours per week.
So a disallow 7th and 8th hour.
But year 6 has 32 hours per week. So there must be a day with 8 hours or 2 days with 7 hours. Maybe you don't want it Firday, so you disallow that day, but all other days are allowed. Also all activities are allowed so late.
So now you can use the constraint you mention and allow max 1 day day per week in interval 7th and 8th hour fo that students set. So that students will have only 1 day with 8 hours. All other day will have 6 hours and start early by that.
Thanks a bunch 8)