After you add one or more diagram displays to your EM project as described in the Add Diagrams to your Project, open them in the navigation tree. Note that:
Diagram definitions are only read when the display is opened. If you edit the diagram definition for an open diagram display, you must re-open the diagram display to see the changes.
When you resize the window, the diagram display auto-resizes to fill the available space, and also positions the diagram in the available space according to the margin and alignment Diagram Properties. If you resize the window smaller than 800x576 or the area required to display the diagram (whichever is larger) scrollbars auto-appear.
Diagrams with the wrapDiagram Diagram Property set to true reposition nodes to use the available space when the window is resized.