A family of Microsoft word processing software products for creating web, email, and print documents.
Hi Nihat,
To insert watermark in multiple files, you can try using a macro. You may also refer the below thread which discusses on the similar topic:
Note: This thread is for Office 2007, holds good for 2010 as well.
I suggest you to post this query in the following link to obtain the desired result using a macro:
Thank you.