To manage identities in Outlook 2011 for Mac, you must use the Microsoft Database Utility, which is installed as part of your Office installation. 

Open the Microsoft Database Utility.
The default location is in /Applications/Microsoft Office 2011/Office/Microsoft Database Utility. (You can also open the Database Utility if you close Outlook, hold down the Option key, and then click on the Outlook icon in the Dock.)

  • To create a new identity, click on Add  and then type a name for the new identity.
  • To rename an identity, double-click on the identity, and then type a new name for the identity.
  • To delete an identity, click the identity that you want to remove, and then click on Delete .
  • To switch identities, click on the identity that you want, click on Action, and then click on Set as Default.

Select an Identity

Note: You can create, rename and delete identities (other than the default one) with Outlook open. To switch identities, you must close Outlook first. You also must close Outlook if you want to delete or rename the default identity.