Your ED Educational license also has Developer capabilities. This means that you can not only build models with the atoms that come with Enterprise Dynamics, but it also enables you to modify the atoms in your library or to develop your own atoms. You are even capable of developing your own simulation applications and libraries.
The new advanced tutorial on Atom Building gives you a first introduction on how to build your own atoms. This also gives you a better understanding of the atoms supplied in your ED library. You can download the new advanced tutorial on Atom Building from the documentation page.