noun

a separate seat for one person, typically with a back and four legs.

seat

verb

act as chairperson of or preside over (an organization, meeting, or public event).

the debate was chaired by the Archbishop of York

preside over,take the chair of,be in the chair at,officiate at,moderate,lead,direct,conduct,run,manage,control,be in charge of,be in control of,have control of,supervise,superintend,oversee,guide