Seeing a muezzin signifies one who calls people to goodness, because the muezzin calls people to goodness and salvation. Sometimes a muezzin signifies a marriage official, the ruler's envoy or chamberlain, or someone who summons people to prison.
Seeing oneself call the adhan and invite people to goodness signifies going on Hajj if the dream occurs during the months of Hajj.
Seeing a woman call the adhan from a minaret signifies that ignorant and unlearned people will take over that locality.
Seeing oneself become the muezzin or caretaker of a mosque signifies righteousness in religion and belief, service to Islam, goodness, and benefit.
Ibn Sirin said that seeing the caretaker of a mosque signifies the judge or governor of the town.
Seeing oneself become a muezzin signifies being among the people of righteousness and piety, soundness of religion and belief, and calling people to truth and guidance.