The mu'adhdhin is entrusted with performing the adhan at the prescribed time.

The Shaykh : Therefore, observing this is for the religious mu'adhdhins, not the employees. The employees receive salaries and call the adhan according to the astronomical timing, and that is the end of it. But the mu'adhdhin has a duty to perform, just like the imam. So he (peace and blessings be upon him) said: . But unfortunately, the turn has come to the Muslims; religious jobs have become like any non-religious job, an administrative job, for example, or an industrial or professional one. And upon you be peace and the mercy of Allah, religious jobs have become like the others, performed as a job, without regard for the limits of the Shari'ah.
So I think the answer to the question is finished now.