From Finder, open the Applications folder.
Ctrl+click or right-click Microsoft Outlook, and then select Show Package Contents.
Open Contents > SharedSupport,
launch Outlook Profile Manager.
Select the Create a new profile button , and then enter a name for the new profile.
Double-click the profile, and then enter a new name for the profile.
Access Set the default profile , and choose Set as Default. Restart Outlook for this change to take effect.