  We present an ongoing development of an existing code for calculating
ground-state, steady-state, and transient properties of many-particle systems.
The development involves the addition of the full four-index two electron
integrals, which allows for the calculation of transport systems, as well as
the extension to multi-level electronic systems, such as atomic and molecular
systems and other applications. The necessary derivations are shown, along with
some preliminary results and a summary of future plans for the code.
