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To send an email to or invite a Cal Maritime employee to a meeting, you can just look them up in the To/Invitee field as you would a Cal Poly employee:
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Sharing a OneDrive file or folder to a Cal Maritime employee is done the same way as sharing to a Cal Poly employee:
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SharePoint
To share a SharePoint site with a Cal Maritime employee:
From the gear menu, select “Site Permissions”, select Site Permissions.
From Site Permissions, select Add members > Share site only.
Enter the Cal Maritime employee’s name or email address: