Is it obligatory for those who is doing the Qurban to attend the slaughtering procession if he has represented a sacrifice committee? What if he doesn't attend?
In Islamic Web Fatwas mentioned:
Attending the slaughter procession is not a requirement for the legality of the sacrifice. Even if someone represents his sacrifice on a committee, for example, then he does not attend the slaughter, then the sacrifice is still valid. Attending the procession is only a sunnah, not mandatory.
Al Bahuti in Ar Roudh said,
ويتولاها أي الأضحية صاحبها إن قدر أو يوكل مسلما ويشهدها ، أي يحضر ذبحها إن وكل فيه. انتهى.
"Shohibul qurbani should take care of the sacrifice himself. But he may also represent other Muslims and he witnesses the slaughter procession when represented. "