My wife and I had each a separate accounts, mine was msn.com and hers was Hotmail.com.  And when I open my account my picture would show on the top right hand corner and when I click it, it would show both accounts and I could choose to open her account.  It would open up her email activity and I could choose to go back to my account by choosing my picture. 

Now with Outlook I can't do that.  Outlook only shows my picture and I would have to close it and start all over by signing in with her information. 

How can I go back to what I had before?  Thanks!