How to switch the calendar picker to the week starts on mondays?

Hi, I am new to AT and just create my first project. I found the settings for the calendar. However, Week starts on Sunday is greyed out and when I click on Edit calendar I find no option to let it start on Mondays.

So what can I do to change this?

I found the answer myself. I had already added a couple of events when I realized that the week starts on Sundays.

Note that calendars can only be fully edited for new timelines. Once you add an event or entity to a timeline, you will still be able to edit the names associated with your months, weekdays and eras, but you will not be able to edit properties that affect calendar calculations.

Good luck I had not added any further information. Going to delete that project now and start anew.

Maybe that’s not even necessary. What works for me with Aeon Timeline 2: Select all events with Ctrl-A, move them to the clipboard with Ctrl-X, then change the calendar, and then paste the events again with Ctrl-V. Is that just a coincidence, or does it work for you too?