Close

On the Home tab, in the Projects group: Select Project | Close to close the current project.

When you click the Project tab to open the backstage menu, a sortable list of attached projects is displayed (when you Attach a project you make it visible to the application).

You can close the current project here by clicking Close at the end of the project row:

If a Master Project has been defined as part of your system options, it will be opened automatically whenever you close another project.