It really depends on your specific situation. I always dry hatch, which for me means I add NO water until lockdown. This works well for me, because I live in a humid area at sea level and use a Hovabator... depending on your ambient humidity, altitude, and specific incubator, you may need different conditions.
However, for a first hatch, I always recommend that you just try something--whatever makes sense to you--and keep records. In particular, measure the air cell growth, because that is what the humidity is for. You want the air cell to fill between 1/4 and 1/3 of the egg at hatch time. If it is too small, run your humidity lower next time. Too large, run it higher next time.
You can measure the air cell at each candling (for me, I candle every five days on coturnix quail) and if it looks like it's not developing properly, you can go ahead and raise or lower humidity accordingly for a better hatch. Meanwhile, make a record of air cell growth and humidity, and adjust your next hatch accordingly.
Good luck! Hatching is fun, and quail are my favorite because they zip and pop so fast and they're SOOOO cute!