Multiplicity?
Peace be upon you and God's mercy and blessings. What do you mean by legal marriage? You can visit the mosque there, the consulting office is mortgaging all people.
Walaikum AsSalam. if I understood you correctly, you are asking if Muslim Marriages are conducted by Imams legally. Yes, the Imam performs and handles all matrimonial ceremonies according to the Islamic Shariah if held at the Mosque.
Thanks! Your answer is awaiting moderation.