What is the legal validity of the supplication performed by the preacher after the second sermon on Friday, accompanied by the loud affirmation of the congregants?

Supplicating on Friday during the sermon is part of the Sunnah (definition), as the Prophet, peace and blessings be upon him, said: "Indeed, on Friday there is a moment when no Muslim servant stands and supplicates to Allah for anything but that He grants it to him." It was said that this moment is between the Imam's sitting down and the end of the prayer. The believer is a supplicator, and it is recommended for a Muslim to increase supplications on Friday. This is especially emphasized for the Friday preacher. It is also recommended for the affirmation of "Ameen" to be done silently.