To change the default recurrence settings for an event in Microsoft Calendar:

1. Open Microsoft Calendar.
2. Select the event you want to modify.
3. Click Recurrence from the ribbon at the top of the screen.
4. Choose the options you would like to set as the default recurrence settings.
   
5. Change the range of recurrence and the start and end times, if necessary.
6. Click Save to save your recurrence settings.