Set up iCloud Сalendar synchronization with your Bitrix24. All events from your iCloud Сalendar will appear in your Bitrix24 Calendar and the other way around (read more how to set up the synch
here).
Please note that to synchronize your iCloud calendar in Bitrix24, you need to get the application password from Apple. This is a standard operation for third-party applications.
Here is how to add the application password for iCloud Сalendar.
You can disable calendar synchronization with iPhone and macOS at any time (
here is how).