Meaning of 付添い in Japanese

彼女は結婚式で花嫁の付き添い役をつとめた。
She was a bridesmaid at the wedding.

場所の確認：見合いの場所を本人か付き添い人が下見をしておきましょう。
Location check: The parties involved themselves or their attendants should look over the place for the miai meeting in advance.