To update documents
If the document is a read-only document, click the Check Out button. Click the Undo Check Out button to check the file back in without saving your changes.
1.Make your updates to the document.
2.Click the Check In button.
3.(Optional) Enter an explanation of your changes in the Notes field of the Save Dialogue window.
4.Click Save. A read-only version of the updated document opens.
You can see a list of the documents you have checked out in the Checked Out Documents section under the tab.