You might want to look at my post on 1FR/ILS.
https://forums.flightsimulator.com/t/step-by-step-wt-cj4-ifr-ils-flight-from-new-york-city-to-newark-nj-includes-flight-plan-take-off-cruise-landing-2-min-to-create-fp-15-min-flight/373613/15