Using Classic Outlook on Windows for personal email, calendar, and contact management
Hello Kevin Howard3,
Thank you for posting your reply in Microsoft Community.
Unfortunatily there is no direct way to Sync two calendars in Outlook, however there are some add-ins that can help you achieve this.
In this Microsoft community discussion about Sync multiple calendars in one | Microsoft Community multiple solutions were presented such as add-ins and Power Automation.
We suggest that you use Microsoft Power automate to create a flow that syncs the two calendars. you can start with Microsoft Power Automate documentation | Microsoft Learn
We are happy to provide any further assistance if needed.
Best regards
Microsoft Community