The shadow office implements the "shadow" approval procedure.

Take the regulations of Suzhou Meteorological Bureau in Anhui Province as an example. If Suzhou Meteorological Bureau finds that there will be hail in the future, it will first issue an early warning to the weather modification office and the county meteorological bureaus.

Then enter the second step, the "shadow office" will report the feasibility of implementing shadow operations to the competent leaders of the municipal government, and after obtaining the consent, it will also submit an operation application to the relevant air traffic control departments. After approval, the shadow office can operate. During the shadow activity, each operation point needs to continuously observe the weather change, analyze the weather evolution trend, locate the possible operation points, and issue operation instructions when the operation conditions are met; And after the operation, the "Shadow Office" should apply to the air traffic control department to cancel the operation. Finally, we must report to the shadow department at the next higher level and the local government.