officiate

verb
1
to act as an official in charge of something, especially a sports event
داوری کردن, قضاوت کردن, اجرا کردن مراسم رسمی
2
to do the official duties at a public or religious ceremony
سرپرستی مراسم را بر عهده داشتن
He baptized children and officiated at weddings.