officiate (v.)

• act
• adjudicate
• administer
• administrate
• anoint
• arbitrate
• chair
• chairman
• conduct
• confirm
• direct
• function
• hear
• impose
• judge
• lead
• manage
• mediate
• minister
• moderate
• oversee
• preside
• referee
• run
• serve
• superintend
• supervise
• try
• umpire