Can I put more than one name for Qurban?

Yes, you can. 

Ibn al Qoyyim said in Zaadul Ma’ad:

“Among the Sunnah of Rasulullah (pbuh) is that the Qurban of a goat can be for a person and his family even though they are in great numbers” as mentioned by a hadith by Atha ibn Yasar from Abu Ayyub Al-Anshari.