Need look out simultaneously in owa a user mailbox and shared mailbox

I am working against exchange server 2010, located in the root of the forest. I have the right to manage  mailboxes for my domain. I have created the shared mailbox and allow manage full access permissions  for my mailbox. I want to see at simultaneously in the Web Outlook my mailbox and created the shared mailbox (not only Inbox folder  )

Please, help