The most important thing was that visitors had to be able to do 10-minute zoom meetings with the schools during the day.
So we created a planning tool on the website:
Step 1: picks the school(s) you want to zoom with
Step 2: pick the time you want to zoom
Step 3: fill in your information
The planning tool doesn't work anymore because the event is over. Don't worry, you can still see the website.