officiate

officiate (as something) (at something)

to serve as an official or moderator at some event. They asked me to officiate as a judge at the contest. Laura will officiate as parade marshal.

Name	Pronounced	Usage
Jefferson	JEF-ər-sən	English
Havryil	hahv-ree-YEEL	Ukrainian
Bentley	BENT-lee	English
Marlin	['ma:lin]
Nanaya	-	Near Eastern Mythology
Jaleh	-	Persian