1Being in charge of or responsible for a particular task, role, or area of work; also refers to the person who holds that responsibility. Commonly used as "〜を担当する" (to be in charge of ~).
私は営業を担当しています。何かあればご連絡ください。
I'm in charge of sales. Please contact me if anything comes up.
今回のプロジェクトは佐藤さんが担当だ。
Mr. Sato is in charge of this project.
担当者に直接問い合わせてください。
Please contact the person in charge directly.
来月からクラス担当が変わることになった。
Starting next month, the class's homeroom teacher in charge is going to change.