I am a US citizen and understand that I need to file I-130 for my sister. But after reading the forms and instructions, I was not able to find out where should the minor son of my sister be included - should I file a separate I-130 for her son or does he go on her I-130? All this is not clear in the forms - help anyone please.

I think I found the answer in the I-130 instructions - separate petition is not required.