Outlook App not able to track appointments

Hi,

We have a setup with our users tracking their appointments in Dynamics365 via the Outlook App, however, users cannot track meetings if someone else in the organization has called in for the meeting.

An orange message pops up with: 'you can't track this meeting because it was organized by another user'

Is this related to a setting or related to security roles, or merely just as is.

Thanks

David