A group hatch is when you restart your tamagotchi and tell everyone what it is. I've tried to participate, except I was much to busy to get to it. They're really fun. You should try going to a group hatch.
If you don't know what to do you NEED to read the pinned topics! The pinned topics tell you what each section is about and the rules you need to follow. They give you all the info you need and you shouldn't have to post topics like these. Sorry but