Is this the table you want?
![jthi_0-1657864856208.png jthi_0-1657864856208.png](https://community.jmp.com/t5/image/serverpage/image-id/43975i66E6A100155E3CB2/image-size/medium?v=v2&px=400)
There are many ways of doing this, one would be to use formula. Here is one example formula:
:"net name"n[Col Min(Row(), :group)]
It uses Col Min to get first row for each group, and then uses that found row to get value from net name column.
-Jarmo