I have some events i can resize even to zero minutes, the minimum should be 15. What do you suggest?
You can use the onEventResizing event to customize the behavior during drag-and-drop resizing. You can use it to enforce custom rules, such as setting a minimum duration:
onEventResizing
onEventResizing: args => { const duration = new DayPilot.Duration(args.start, args.end); if (duration.totalMinutes() < 15) { args.allowed = false; } },