How many dependent do you need to rate a 3 bedroom in military housing?

I need to move into military housing, does anyone know how many dependents showing on your RED rates a 3 bedroom or 4 bedroom house?How many dependent do you need to rate a 3 bedroom in military housing?My daughter lived in military housing. To get a 3 bedroom you need to have 2 children both a boy and girl. They allow 2 per bedroom so depending on gender you need 5 children to get a 4 bedroom unit.How many dependent do you need to rate a 3 bedroom in military housing?At least 2 children of different genders