Hello, to clarify what is current situation

I have following category tree:

Parent category -> 1st child category -> 2nd child category -> 3rd child category -> Products mapped to 3rd child category

My issue is that products are not shown when entering Parent category and are not shown when entering 1st child category, only after i enter 2nd child category products appear. Is there a way around this or some special setting (Include products from subcategories is enabled).

Thanks in advance!