Doubts Setting up Nalleto WP

Hi Guys,

I´ve just purchased the Nalleto WP theme, and was playing around with it trying to do a home page just as the home page on the live-demo.

I´ve also encounter a hard time to set it up properly.

For example:

I´ve created a Menu containing the categories A and B. Which categories has an 2 subcategories SubA and SubB. What i want to know is: How do create a new post #1 to only be displayed on the Cat A and SubA and so forth? Make Sense?

TO make things more clear, here is an better example:

I have 4 post: Post 1 / Post2 / Post 3/ Post 4

I want to be like this:

1º Menu Category A / SubCategory A/ Post 1
2º Menu Category A / SubCategory B/ Post 2
3º Menu Category B / SubCategory A/ Post 3
4º Menu Category B / SubCategory B/ Post 4

Can i do that?

Thanks for the help

Regards,