I can, and will, help with this, but this is not an NVDA question, but a question on how to use several different features of Microsoft Word.

Join the Chat Subgroup ( chat+subscribe@nvda.groups.io) then post this topic there (chat@nvda.groups.io).

You need not do this manually, either, one can break one's document into sections, using one numbering scheme for one section and another for one or more other sections.  That makes life much easier as pages may be added or deleted.
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Brian - Windows 10 Pro, 64-Bit, Version 1809, Build 17763  

Growth for the sake of growth is the ideology of the cancer cell.

           ~ Edward Abbey