Officiate

v. i.	1.	To act as an officer in performing a duty; to transact the business of an office or public trust; to conduct a public ceremony or service. [imp. & p. p. Officiated ; p. pr. & vb. n. Officiating.]
v. t.	1.	To discharge, perform, or supply, as an official duty or function. Merely to officiate light Round this opacous earth. - Milton.

Verb	1.	officiate - act in an official capacity in a ceremony or religious ritual, such as a wedding; "Who officiated at your wedding?"
	2.	officiate - perform duties attached to a particular office or place or function; "His wife officiated as his private secretary" Synonyms: function

act, act as, adjudicate, administer the Eucharist, administrate, anoint, arbitrate, chair, chairman, chrism, conduct, confirm, direct, do duty, function, head up, hear, hold court, hold the scales, impose, judge, lay hands on, lead, manage, mediate, minister, moderate, occupy the chair, oversee, perform a rite, perform as, perform service, preside, preside over, referee, run, serve, sit in judgment, supervise, try, umpire