I'm assuming that you have previously auto-organised onto your F:\ drive, so you won't yet see the box for the C:\ drive section.
Hit the 'Add Drive Mapping' button and add the mapping for the C:\ drive, make sure that 'to folder:' info you already have for your F:\ drive matches exactly
for the C:\ drive. (the red highlight areas on the ss)
You can put any naming template you like in the blue area, as once you have them on the F:\ drive, you original naming templates will take-over and move them around as before