Welcome back! You can't keep males together so a group of one male to 2-4 females would be good. Make sure they have enough room to not be cramped with multiple hides on the hot and cool sides of the enclosure. Also make sure plenty of food is offered so everyone is getting their fill. Sometimes a dominant individual will eat more than their share and occasionally some nipping may occur. It would be best if all of them were the same size. Good luck and have fun!