word2013 How to encrypt a document

word2013 How to encrypt a document:

Open the edited document with WORD2013, click on the file in the upper left corner, and click on the information on the pop-up page to appear as shown in the image.

Mark first as final state

Then you'll notice that the document becomes the following figure

Second, you can password protect

Also, you can make restrictive changes to the contents of a document, such as restricting formatting or not allowing anyone to make changes, as shown below