Troubleshooting Outlook Scheduling Issues:

1. Check your permissions: Ensure that you have the correct permission level to schedule and/or change recurring events.
2. Verify changes on Outlook Web: If the changes are visible on Outlook web but not on Outlook Desktop, you may need to sync the calendar.
3. Contact your IT department: Your organization may have Exchange policies that prevent the creation and/or scheduling of recurring events.
4. Update system time or date: Make sure that system time and/or date matches the calendar.
5. Check settings: Review the settings of your calendar view within Outlook to ensure that time/date settings are correct.