OFFICE 365 - OUTLOOK WEB APP - MOVING EVENTS FROM ONE CALENDAR TO ANOTHER
Instructions for moving calendar events from one calendar to another using Outlook Web App (OWA).
NOTE: If you are using Outlook 2016 desktop client, please refer to Office 365 - Outlook 2016 - Copy Events to Default Calendar .
The process below will move the event from the original calendar (versus copying it). The event will no longer appear on the original calendar. The only way to maintain the original AND have a copy on another calendar in OWA is to recreate the event on the second calendar from scratch. Copying without recreating is possible in the Outlook 2016 desktop client following the instructions linked above.
1. Open the event you would like to copy to the default calendar.
2. Select Edit. Select Edit occurrence or Edit series as appropriate.
2. Use the drop-down menu under Save to calendar to choose another calendar. ("Calendar" is your default calendar; this is the only calendar that reflects free/busy times to others.)