で会うことになっている

be scheduled to meet at

→ で
phrase Rare #36,697
be scheduled to meet at Used to say that a meeting has been arranged or is scheduled to take place at a particular location. The location is marked by で, and ことになっている expresses an established arrangement or expectation.
JA: 今日の午後、ブラウン氏と、彼のオフィスで会うことになっている。
EN: I’m scheduled to meet Mr. Brown at his office this afternoon.

彼らはあすホテルで会うことになっている

They are scheduled to meet at the hotel tomorrow.

私たちは彼の家の前で会うことになっている

We're supposed to meet in front of his house.

彼とそこで会うことになっている

I'm supposed to meet him there.

今日の午後ブラウン氏と彼のオフィスで会うことになっている

I’m meeting Mr. Brown at his office this afternoon.