How to create a dual row connector?

I just tried this and is still does not work. Am I doing something wrong? I need a 3 row, 8 pin, male connector. The board I’m using actually seems to be a 2 row connector and a 1 row connector. The 2 row connector I think is actually 2 pin connectors mounted vertically (a 2 pin column) to create a horizontal 8x2 connector with a single row connector mounted above it. Maybe I could try to duplicate that? What is the best way for me to create this part? Using the core parts and selecting rows = 2 does nothing, I still see only a 1 row part.