[Ifeffit] synthesis of EXAFS via larch

Dear Colleagues, I am aiming to use Larch to synthesise EXAFS spectra for metal oxides and I wonder if that would be the right way. I can synthesise the paths in Demeter/Artemis but I have no idea how to sum them in order to obtain a single EXAFS spectrum. Hence, the interest in Larch hoping that it can do what I am looking for. Best regards, Kate