As you work on a section of a document that is shared with others, you can make sure that no one else interferes. To do that, tap Review > Block Authors.
In the body of your document, you’llsee highlighted “locks” on the sections you don’t want others to edit.
You can tap Review > Unblock All My Blocked Areas when you want to free those sections for others to edit.
How do I know if someone is working on my document?
When you start working with others on the same document, a message pops up and tells you who is editing the document.
Also, on your iPad, the Share icon in the upper-right corner displays the number of people working on the file.
To see who else is working on the file, tap the Share icon, then tap Shared With.
Tips: As you work with others, you’ll probably see some messages and formatting appear:
When another author saves a change in the file, you see this message:
You also see this icon and a green highlight on the section the other author changed:
To see the updates, click Save and Refresh, on the right side of the message bar:
Word loads the changes by the other author, and highlights them in green: