How To Create A Watermark In Microsoft Word | Watermark In Microsoft Office

for adding watermark in MS word we follow following steps

step-1 :- go to design tab in your MS word

step-2:- select watermark option present in page background group

step 3:- choose available watermark template or you can choose custom watermark option.

step 4:- you can add custom water mark using either text or picture option.

step 5: select all desired option

step 6:- click on apply button

for more detail you can check this link