If I set them without waiting the 24 hours due to hot weather, I do not turn the eggs for the first 24-36 hours.. My opinion is that in some instances, hot weather can and will start the incubation period. and In believing this, it's in the best interest in getting them into the incubator as soon as they arrive to keep from damaging the embryos. WHEN I do this, I do not turn them so they can settle just as most would do on the kitchen table.. As stated, this is my opinions and in no way claiming it to be the best way to do them, just that I have better hatch rates with my own shipped eggs in my incubator under my circumstances.
If I let them settle outside of the incubator, they get turned from the moment I set them until lockdown.. or sometimes I never quit turning them, just put a cover over the trays so the chicks can't jump out during multiple hatch days in the same tray..