Add, change, or delete a profile for Outlook on Mac
From Finder, open the Applications folder.
Ctrl+click or right-click Microsoft Outlook, and then select Show Package Contents.
Open Contents > SharedSupport, and then launch Outlook Profile Manager.
Do one of the following:
Create a new profile
Select the Create a new profile button , and then enter a name for the new profile.
Rename a profile
Double-click the profile, and then enter a new name for the profile.
Delete a profile
Select the profile that you want to remove, and then choose the Delete the selected profile button .
Change the default profile
Highlight the profile that you want, access Set the default profile , and choose Set as Default. Restart Outlook for this change to take effect.