How do you make a leveled list spawn enemies of different types for the same level?

[WhatRules]

I'm trying to edit the lists in this mod:

 

As I understand it you get either melee or ranged rieklings from the leveled lists(at least at level 1). Is it possible to make it spawn both types in the same place? For example 2 melee + 2 ranged?

 

I tried setting the count to three for now, but only 2 rieklings spawn. How come?