1. First select the Office Hub and swipe over to places (locations).
  2. Tap Office 365 and select Setup.
  3. Choose a new Outlook account.
  4. Fill in the account credentials (Office 365 email address and password).
  5. Once your email set up is complete, press Finish. Then the SharePoint site is automatically added to the locations panel.
  6. Tap Team site, fill in a separate authentication to access your company SharePoint.

For more info on Office 365, see the video at http://www.youtube.com/watch?v=2QxiYmAerpw (in English only).