I am studying the chemical bonding of small molecules using localized orbitals, and localized orbital surface visualization (codes PSI4, Multiwfn, IQMol and others, .fchk file data transfer). I would now like to calculate and visualize the electron density surfaces for each individual localized orbital. Is there an uncomplicated way of doing this? Modify fchk file? I would appreciate any help you could give. Thank you.