Sometimes you may not want to put a password on a document, but you may want to control who edits it and who can make changes. There’s a way to do that in Microsoft Office.
Click on “file” on the top-left hand side of the screen, and then click on “protect document”. Then, click on the “restrict editing” tab.
On the right-hand side of the screen, you’ll see some options to limit formatting to certain styles and restrict what people can edit. Then, you can start enforcing those rules.
This is a good way to share documents around your office for editing without having the main message of the document itself deleted accidentally.