时空管理 (shíkōng guǎnlǐ)
时空 (shíkōng): Literally means "time-space."
管理 (guǎnlǐ): Means "management," "administration," or "to govern."
Therefore, 时空管理 is the organization that governs or administers time and space. I translated as the Temporal Management Bureau, to make it more 'official' as "Time-Space Management Bureau" sounds more like a literal, technical description of its function. It's slightly clunkier and less commonly used as a proper name.