I think you'll be fine honestly. The way we used to add water is we'd get little cheap sponges from the dollar store, and use a shot glass and put the shot glass with sponges in there, because we had a problem where all the water would just drain out. It worked wonderfully. Just make sure you...
Yup, take them out and just lay them in the bator, get your humidity perfect, shut the bator and don't open it until you feel as if they aren't going to hatch any more.
Lockdown is just locking down the bator, as in not opening it. It usually takes place at day 18,whenver you stop turning the eggs, you add water to up the humidity and lock down the bator and don't open it so that the heat and humidity doesn't fluctuate to much in the last few days. Although if...