Is it possible to open a presentation of some embedded object on clicking the button on Simulation presentation?
Yes, to implement this, you need to substitute the line: getEngine().getPresentation().setPresentable( getEngine().getRoot() ); in the Action of this button for: getPresentation().setPresentable(((Main)getEngine().getRoot()).myClass); Here root active object class is named Main. This class contains embedded object named myClass. Click on the button will open the presentation of myClass, not the presentation of the root object.