When you start the Copy/Monitor tool, select Use Current Project, and then select Copy, you can copy and monitor selected elements within the same project.
For example, use this method in an architectural model when you have created architectural columns and you want to copy structural columns to the same locations. When an architectural column is moved, a warning reminds you to move its structural column.
You can also use this method when implementing Copy/Monitor in a workshared project. See About Copy/Monitor and Workshared Projects.