How organize the structure with CharacterBody2D and Area2D

I read that the best way to make root node CharacterBody2D and it child node is Area2D. I put Sprite Sheet and Collision Shape in the root node. But if I do so, the Area2d node asks for Collision shape as well the CharacterBody2D if I moved these nodes to Area2D. (I want to make this in reason that when character collide with obstacles it make "auto jump" over it. I use move and click character control. scrolling 2d project).