役やくを勤つとめる

expression, ichidan verb

play a role; act as; hold an office

Used when someone takes on a specific role, duty, or position, whether in a performance, an organization, or a formal capacity.

• 彼かれは会かい議ぎで議ぎ長ちょうの役やくを勤つとめた。

  He acted as chairperson at the meeting.

• 彼かの女じょは劇げきで主しゅ役やくを勤つとめることになった。

  She ended up playing the lead role in the play.