noun
person in charge; official in charge
Refers to the specific person responsible for a task, desk, or area. Common in workplace and service contexts.
すみません、この件の係の人はどなたですか。
Excuse me, who is the person in charge of this matter?
係の人に聞いてください。
Please ask the person in charge.
担当者 is more formal and often used in business settings, while 係の人 is a bit more casual and can refer to any designated person in charge.
Compound of 係 (かかり, 'person in charge') + の (possessive particle) + 人 (ひと, 'person'). The kanji 係 is standard for this meaning; 掛 is an older variant.