How can lock part of a document and leave part of it editable?

To lock part of a document while leaving other sections editable, you can use the "Restrict Editing" feature in applications like Microsoft Word. First, highlight the text or sections you want to keep editable, then go to the "Review" tab and select "Restrict Editing." Set your editing restrictions and apply a passWord if desired. Finally, save the document, ensuring that only the specified sections remain editable.