Problem with Word and Win 8.1

Within Word 2010, I am not able to edit the text highlighted below.
How to adjust the text in above?

BTW, how to add Chinese language input method within Win 8.1
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HuaMin ChenProblem resolverAsked:
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That part of the document could be protected (for Forms or Read-only).
It's hard to guess from the picture. Can you post the document (redacted if necessary)?
HuaMin ChenProblem resolverAuthor Commented:
Many thanks. I am not able to adjust the part on top of page 6 of the file below

it is part of the header

Go to Insert  / Header & Footer / Header / Edit Header


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HuaMin ChenProblem resolverAuthor Commented:
Thanks. within the attached document, why can't I edit the highlighted text shown below?
Right-click over the text you cannot Edit

then should Edit header appear click on it and change header

How should the header be?
HuaMin ChenProblem resolverAuthor Commented:
Thanks. I right-click the highlighted text below and there is no way to edit it
With Over the text I meant the upper margin

see image
HuaMin ChenProblem resolverAuthor Commented:
Many thanks.

How to edit the footer part highlighted below?
HuaMin ChenProblem resolverAuthor Commented:
BTW, is there a way to show the current page number on footer part?
Goto Insert /Header & footer / Page Number / Bottom of the Page / choose the one you want
HuaMin ChenProblem resolverAuthor Commented:
How to put Page number, on footer?
To edit the footer

Right Click on the Bottom Margin you should see Edit Footer Click on it
the Header& Footer Tab wll then be available
HuaMin ChenProblem resolverAuthor Commented:
Thanks. I know how to edit footer. But how to put page number, within the footer area?
In the Footer Tab

Choose Header & Footer / Page Number / Bottom of Page

or Insert / text / Quick Parts / Field

and use the Page Field
HuaMin ChenProblem resolverAuthor Commented:
Sorry, I do not know what to press, to insert Page number below,
13 within footer
Try the shortcut

HuaMin ChenProblem resolverAuthor Commented:
Many thanks. when I put Page number into Page footer in the way you suggested, I do not know why the proper Page number cannot be revealed on each page correctly. Can you please have a look to the document file below?

BTW, I did request to have Chinese Input method on Win 8.1 originally on this thread. where is the option?
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