Hi Maaike. Thanks for considering our plugin suite for your needs.
It sounds like you’re looking for more of a booking calendar plugin, which our event calendar suite is not designed to be. We’ve received similar requests from other users in the past; it’s just not something we offer at this time.
If you want to give it a try anyway, we do have a pretty great Refund Policy so you can buy one or many of our add-ons and thoroughly test them.
If your teachers want to add their own events and you don’t want them to have wp-admin access, you could use Community Events. And if they want to set their pricing for their own events and you can make a commission off each ticket they sell, check out Community Tickets.
Let me know if you have any follow-up questions.