Hello abhishek.kumar@chassisbrakes.com,
I have updated our library so we have all CS present. Can you please confirm everything is working on your end? I have provided here a self extracting zip (like we do for our community patches), so all you have to do is select the root directory of our toolbox - you should be then asked if you want to overwrite some files. If this happens, then the patch is working and the path you inserted is correct. I would recommend you to save a copy of mbd_mpc574x_ec_toolbox as backup (the old version of our library) - you can just rename it as mbd_mpc574x_ec_toolbox_old.
Now the CS pins should be dynamically updated (CS0-7 should be present for your part in the Pins tab).
Kind regards,
Razvan.