Hi @Leslie Marianko ,
If you want to share a calendar with someone who works outside of your organization, it is recommended that you add external users to your contacts.
Open the calendar in Outlook and then click Home > Share Calendar > Calendar. (If you’re using Outlook for more than one account, then make sure you select the calendar for the account you want to share.)
The “Calendar Properties” window will open on the Permissions tab, showing you who currently has access to your calendar. To share your calendar with someone, click the Add button.
This will open up your address book. On the Address Book dropdown, click Contacts.
Add the person you want to share your calendar with and then click OK.
The person you’ve shared your calendar is sent an email.
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