Is there any way of DeepSee support a hierarchical structure of grouping?

Example:

A product category structure:
- Code
- Name
- Group (parent)

I'm trying to calculate the percentage of the top level with the SUM function.
But I don't understand the PARENT behavior.
It does not work in any way!

SUM({FilialD.H1.Categoria.CURRENTMEMBER.PARENT.ALLMEMBERS},MEASURES.[Valor])

SUM({FilialD.H1.Categoria.CURRENTMEMBER.PARENT.%ALL},MEASURES.[Valor])

Someone could explain me the difference between %ALL and ALLMEMBERS?