What should a worshipper do between the two sermons, and should he say "Ameen" aloud and raise his hands when the preacher supplicates, or not?

It is best for the listener, when the Khatib sits between the two sermons, to engage in supplication, hoping to coincide with the hour of answering on Friday, even though the preponderant opinion is that it is the last hour of Friday before sunset. It is sunnah for the listener to say "Amin" when the Khatib supplicates. The ruling on vocalizing "Amin" according to the four madhhabs has been previously explained. It is not prescribed for the Imam or the congregants to raise their hands when supplicating in this situation.