Homo/Lumo in transiesta

After obtaining the T(E), I-V spectra, I would like to know how to extract the Homo, Lumo energies in Transiesta calculation,
how can we calculate the charge density also?

Thank you for help

Hello Hanan,

I also want to know how to locate HOMO - LUMO in PDOS and DOS after Transiesta Calculations.
If you got your answer the please suggest me a better way to do it.