WordPress sub sub category

in wordpress (woocommerce)

i need to find a way to do one of two:

in child cat page list part of the products under title A, the other under title B

or: in child cat page where i list its products in a row, in another row i want to list a parant cat products - which is not related to the sub category / or it can be its sub sub category.

hope i am clear. would love to have a solution for that.