Add a shared Outlook calendar to a SharePoint calendar

Hi all,

I have read through endless instructions on how to do this, but I am still struggling to add an exchange calendar overlay to a SharePoint calendar for a shared Outlook calendar.

Does anyone know how to do this in SharePoint online?

I thought I had done this in the past, by taking the URL when viewing the shared calendar in OWA, but the URL these days is: https://outlook.office.com/owa/?path=/calendar with nothing specific about the calendar I am viewing.

Has anyone successfully done this recently?

Thanks,

Andy.