Hi, Gladys,

As is often the case, there are ways to do what you want with a macro.
Then you can assign a toolbar button or keyboard shortcut to the macro
and it becomes just as convenient as a built-in command.

This one inserts a next-page section break and sets all three possible
footers to _not_ Same As Previous:

Sub InsertSectDiffFooter()
   Dim oSec As Section
   Selection.InsertBreak wdSectionBreakNextPage
   Set oSec = Selection.Sections(1)
   oSec.Footers(wdHeaderFooterPrimary) _
       .LinkToPrevious = False
   oSec.Footers(wdHeaderFooterFirstPage) _
       .LinkToPrevious = False
   oSec.Footers(wdHeaderFooterEvenPages) _
       .LinkToPrevious = False
End Sub

This one changes any Same As Previous footers in the document; there's
no problem using it repeatedly as you add more sections:

   Dim oSec As Section
   For Each oSec In ActiveDocument.Sections
       oSec.Footers(wdHeaderFooterPrimary) _
           .LinkToPrevious = False
       oSec.Footers(wdHeaderFooterFirstPage) _
           .LinkToPrevious = False
       oSec.Footers(wdHeaderFooterEvenPages) _
           .LinkToPrevious = False
   Next oSec
End Sub

If you need instructions, see these articles:

http://www.gmayor.com/installing_macro.htm
http://word.mvps.org/FAQs/Customization/AsgnCmdOrMacroToToolbar.htm
http://word.mvps.org/FAQs/Customization/AsgnCmdOrMacroToHotkey.htm

--
Regards,
Jay Freedman
Microsoft Word MVP        FAQ: http://www.mvps.org/word