# Limitations

While Motion integrates deeply with external calendars, there are some constraints to be aware of:

* **Sync delays** → Updates usually appear within seconds, but provider-side delays can occur, especially with Outlook.
* **All-day events** → By default, all-day events from external calendars sync as *Busy* and block the entire day unless changed to *Free*.
* **Recurring events** → Complex recurrence patterns (e.g., “every 3rd Thursday until next June”) must be created and edited in the external calendar. Motion mirrors them but cannot generate advanced rules.
* **Organizer permissions** → Motion cannot edit meetings where you are not the organizer; those changes must be made externally.
* **Reminder customization** → Reminder times are inherited from the external calendar. Motion does not override or add custom reminder rules.
* **iCloud limitations** → Sync reliability and advanced features (like custom recurrence or advanced reminders) are more limited compared to Google or Microsoft.

**Key Takeaway**\
Motion brings your calendars into one unified view, but the integration still respects each provider’s rules. For advanced recurrence, reminders, and organizer-only permissions, manage those directly in your external calendar.


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