SkyDemon presents all runways as you approach an airfield, and highlights the one that most closely lines up with your position. At some point in the future we will probably present a UI so you can choose the runway you'll be landing on early, which will eliminate the display of the others and set up the ILS.For the ILS to activate currently, you have to be within 5 degrees of the extended centreline and pointing roughly towards the threshold (within 10 degrees of it, from memory).