Leave the eggies inthere untilday 25, if you can.
If the chicks cannot get out on their own, and it has been 24+ hours, you can try to help them out. I have helped with good results and bad. I had a chick pip the entire half of her shell, and she dried out so fast, the membrane was like...
Don't help until at least 24 hours. 48 if possible. You put the other eggs at risk.
Hatching is hard work. Keep your hands out of there!
STOP IT! NO TOUCHING! ....I can see you.