Collocations for treasurer - noun

assistant
honorary (BrE)
the honorary treasurer of the rugby club

corporate
church, class (AmE), club (BrE), party (esp. BrE)
campaign (esp. AmE)
county, state (both AmE)

act as, be, serve as
He agreed to act as treasurer.

appoint, appoint sb (as), elect, elect sb (as)

treasurer's report
The treasurer's report gives a breakdown of the club's income and expenditure.