Whilst trying to create an event:
Too many icons for the participants are confusing.
Steps to reproduce:
1. Create an event on any day
2. Go to the Category "Participants"
3. Go to "Find Availablitiy"
4. Icons are shown, with their meaning
Actual result: Getting confused by all the different choices.
Expected result: There should be only the options "Organisator", "Erforderlich", "Nicht erforderlich".