officiating

(noun) the act of umpiring. Synonyms: umpirage, officiation, refereeing. Example: "The officiating was excellent."

(verb) act in an official capacity in a ceremony or religious ritual, such as a wedding. Synonyms: officiate. Example: "Who officiated at your wedding?."

(verb) perform duties attached to a particular office or place or function. Synonyms: officiate, function. Example: "His wife officiated as his private secretary."