suffix
person in charge of; clerk; official
Suffix attached to a noun indicating the person responsible for that area or task. 掛 is common in official contexts like government offices and railways.
受付係に尋ねてください。
Please ask the receptionist.
彼は経理係として働いている。
He works as an accounting clerk.
かかり is the standalone noun meaning 'person in charge' or 'duty', while がかり is the suffix form attached to other nouns.
Suffix derived from the noun 係 (かかり), meaning 'person in charge' or 'duty'.