toddler tantarums hiting how to handle and also he hits another little baby also

A. Is it your child that you’re talking about that the child is hitting the younger one or the other kids because sometimes kids are very irritated with the behaviour that this year at home it could be just that the parents are saying no for everything a younger child parents may not give that to the older ones so they could be number of things associated with that she just have to do regular counselling with your child which is only going to be benefiting in the current timing