The most natural way to incubate your eggs, of course, is to do so with a broody quail hen. However, if you intend to incubate often, using the incubator makes perfect sense. Being broody takes a lot out of a hen!
Researchers suggest that a forced-air incubator tends to give the best results.
Studies indicate that the highest hatching rates are achieved with eggs incubated in a horizontal position (on their sides) with turning.
Many bird species naturally turn their eggs while nesting. It greatly increases the chances that your quail will hatch. Read more here.
The temperature of your incubator is incredibly important, as too cold of an environment, and even inconsistent temps, can permanently stunt your quail.