When mailboxes for others are loaded in Outlook 2010 you cannot see their names on their calendar tabs

When secretaries add their Attorney mailboxes as an account in Outlook 2010 it adds their calendars as well.  Only problem is the calendar tabs along the top of DAY view only say Calendar.

To see the actual name on the calendar they have to add a second instance of the calendar via "Open Calendar" > "From Address Book"

This method shows the name but they are left with multiple listings in the Calendar Nav Pane similar to listing below. 

Example of how this shows up in Calendar navigation pane.  Is there a way to show NAMES on calendar tabs for the original entries without having to add them again from Address Book.  Or is there a way to delete the originals.

Calendar - jdoe@company.com (does NOT show name on calendar tab)
Calendar - ssmith@companny.com (does NOT show name on calendar tab)
John Doe (does show name on calendar tab)
Susan Smith (does show name on calendar tab)

Serena K.