This is the 7943rd most frequent Korean word.
회장에게
"To the chairman/president."
In this sentence, '회장에게' functions as an indirect object indicating the recipient of the action (sending an email).
회장에게 이메일을 보냈습니다.
I sent an email to the chairman.
Here, '회장에게' is used to indicate the individual who should receive the report.
회장에게 보고서를 제출하세요.
Submit the report to the chairman.
'회장에게' in this sentence denotes the person to whom the question should be directed.