Grandparent category show children's post

Hi there,
I am using the Newspaper Breadcrumbs plugin with categories, but I am currently facing an issue. My category hierarchy is structured like this:
GrandParent:
Parent:
Child 1:
Post 1
Post 2
Child 2:
Post 3
Post 4
Currently, when I click on Child 1, I can see Post 1 and Post 2 in the breadcrumbs.
However, I would like to know how I can view all the posts when I click on the Parent or GrandParent category.
Specifically, I would like to see Post 1, Post 2, Post 3, and Post 4 when I am on the “Parent” or “GrandParent” category page.
Thanks a lot

Hi @bettina,
Thanks for the answer.
I already have the Category filter set on: “current category”
But when I use it on the parent category page I do not see children’s posts.
I have 3 levels of category, on the last level it works fine but I don’t see the grandchild posts in the 1 and 2 levels.
I understand that this could not be possible from the TagDiv Composer panel, I wonder to know the position of the php file to edit the code.