1、I suggest you refer to the competent authorities for the specifics.
建議你就此事向主管部門去詢問。

2、Please refer to competent authorities for specifics of the visit.
關(guān)于訪問具體情況，請向主管部門詢問。

3、The specific matter certainly requires communication between competent authorities on both sides.
當然，具體事宜還需要雙方主管部門進行溝通。

competent authorities翻譯