الجواب حامدا و مصلیا
Let it be known that before the time of giving Qurbani if the questioner’s father had taken permission from the concerned people at home and sacrificed a large animal i.e camel, ox etc, keeping their shares in it, then in such a situation the Qurbani, on behalf of them as well, will be valid. Therefore it is necessary for the questioner’s father to take permission from the concerned people and perform this Wajib act. Now if the questioner is having means and wishes to perform a separate Qurbani as well then beyond doubt this too is permissible and correct and this Qurbani will be a Nafl, Sawab of which could be granted to any relative etc.
Allah knows best.