Improving secondary calendar management with dedicated owners

November 11, 2025

Improving secondary calendar management with dedicated owners

What’s happening
To improve data governance, we’re changing how secondary calendar ownership is defined in Google Calendar. A secondary calendar is any calendar that you create or a group calendar that is shared with you. Previously, secondary calendars could only be managed at the organization level.

Going forward, each secondary calendar will have a single, dedicated owner. When a new secondary calendar is created, the creator becomes the calendar owner. For existing secondary calendars, an owner will be automatically assigned based on the calendar’s permissions. The calendar will inherit the organizational policies from its owner. This provides fine-grained control for admins to define policies for each calendar, such as data regions or assured controls.

Additionally, we’re introducing the ability to transfer secondary calendar ownership to another user in the same organization, through Google Calendar settings (for end users) or the Admin console (for admins). This is especially helpful when a calendar owner changes teams or leaves the organization, to ensure the calendar remains associated with the appropriate owner.

Additional details
The Google Calendar API has been updated to reflect these changes. Developers can retrieve the secondary calendar owner using the API for Calendars and CalendarList. In addition, we’ve added updates to ensure only the secondary calendar owner can delete the calendar, and that their access level cannot be downgraded as long as they are the owner.

Please refer to the API release notes for additional information.

Getting started

• Admins: This feature will be ON by default and cannot be disabled. To help manage this transition, admins can now transfer the ownership of secondary calendars from one user to another directly in the Admin console.
• End users: This feature will be ON by default and cannot be disabled. For existing secondary calendars, an owner will be automatically assigned based on the calendar’s permissions. End users who own a secondary calendar can transfer ownership to another user.

Rollout pace

• Users with personal Google accounts: Rolling out now
• Rapid Release and Scheduled Release domains: Extended rollout (potentially longer than 15 days for feature visibility) starting on December 3, 2025

Availability

• Available to all Google Workspace customers and users with personal Google accounts