Administrator - How to create a custom event type?

A teacher or administrator can use predefined even types:
How to input a new event into the calendar
or they can use an event type created by the administrator.
The administrator can create new event types in Agenda online > Code Lists > Event types > New

Click "New" and enter the name of the event, select a category and a template - i.e. what properties will this event have.

The event defined this way can be used by any teacher when creating events:

Note: The event type is editable, but once someone actually enters it, it is no longer possible to change the event template. You can only change the category, hence it's a good idea to think carefully about how you want to use the specified event right from the beginning.