Hello @denes,
Thank you for reaching out with your query.
The “Dragging external External events” checkbox allows you to drag events between the calendars when you have 2 or more separate Calendars, you can check my loom video to see how it works.
Also, we have on our Roadmap to implement “External Event Dragging”, so you’ll be able to take elements that live outside of a calendar and make them drag-and-droppable on a specific date of a calendar. And of course, as you mentioned we’ll update our documentation accordingly.
I’ll keep you informed about any updates on this matter.
If you have any more questions or need further clarification, please let us know.
Best regards,
Stephan