Usage patterns
〈人〉が〈部署〉に配属されるto be assigned to a department
The new employee was assigned to the sales department.
〈部署〉を異動するto transfer to a different department
He is going to transfer to a different department starting next month.
〈部署〉間で連携するfor departments to coordinate with each other
This project requires coordination between several departments.
〈部署〉を管理するto manage/oversee a department
She manages the HR department.