Close a Project
When you close a project, it is not in use any more. Close the project when you don't want to create a new document in the active project.
On the tab, in the Projects group, click Close.
You can also start a new document, and clear the To project check box. After confirming the document data, the project name will disappear from the title bar.
Create a New Document to Another Project
If you wish to create a new document to another project, you need not close the active project. When starting a new document, select an existing project, or create a new one using the functions in the New Document dialog box. After confirming the document data, the label of the last active project will disappear from the title bar, and be replaced by the new one.