By consolidating related projects into a master project, you can organize and manage complex projects or multiple related projects more effectively.
Open the project that you want to become a master project in Gantt Chart view.
In the Task Name field, select the row below where you want to insert the project.
Note: You can insert a project at any level of the master project's outline.
On the Project tab, choose Subproject.
(In Project 2007, choose Insert > Project.)
Browse to the folder or subfolder that contains the project that you want to insert and select the project.
To insert multiple projects, hold down CTRL and select the projects in the order that you want to insert them.
Tip: If you don't want to update the subproject with changes from the original project, or if you don't want to show changes from the subproject in the original project, clear the Link to Project check box.
To insert a project in read-only format, choose the arrow on the Insert button, and then choose Insert Read-Only.
Tip: If you consolidate projects that contain resources with the same name, and you want to eliminate duplicate resource names, clear the Link to Project check box. The first instance of a resource name and its resource information, such as pay rates and resource calendars, will overwrite the second and subsequent instances. Because the subprojects are not linked to their source files, you cannot update the original project file with any changes made to the subproject in the master project.