Crystal Regeneration

I have my classes and powers set up to ideally provide the students with a new crystal every day they come to class. (A/B) Schedule. However, I do not want students to regenerate crystals over the weekend as it ruins the game balance and how they use their powers for in-class benefits. Previously, I have been modifying the settings for my classes every Friday to turn off regeneration... but sometimes I forget. Any way we could get a calendar based regeneration setting?

 

The calendar could also be implemented in the future for scheduling events/quests/meetings and other things throughout the system.