Tashlich: A prayer said at a body of water on Rosh Hashanah, because water symbolizes dissolution. When one is thus inspired and repents, his/her sins get [figuratively] thrown (tashlich=throw in hebrew) into the sea.
The evening service on Rosh Hashanah is relatively brief, shorter than the typical Sabbath service, so that people can get home to a festive evening meal. The morning liturgy is long, services starting at 8:30 AM frequently last until 12:30 PM. The service starts like a normal Sabbath service, but the Musaf section at the end is hugely expanded and features repeated blasts on the shofar (ram's horn trumpet). In the afternoon, it is traditional to go to a river or lake and "cast your bread upon the waters" in a brief ritual called tashlich. Is the bread symbolic of sins being cast away? There is debate. Perhaps the participants are contemplating casting away sins and also (but incidentally) casting bread.
You might have a few people that would lead a few types of prayers but most prayers involve the congregation in which all members present and able will participate. If you're asking who leads the service, it is often the rabbi with the help of a cantor and sometimes choir. At home, it is the father and/or mother.
On Rosh Hashanah, Jews eat foods whose names or characteristics connote a blessing; for example, pomegranates are eaten so that they should be as full of mitzvot as a pomegranate is of seeds.Answer:Rosh Hashanah is the first two days of the month of Tishrei, and is the Jewish New Year. Our traditions state that at that time the world is judged for the coming year (Talmud, Rosh Hashanah 16a); and we read the Torah and say prayers which ask for a good year and which declare God's kingship over the world. The shofar (ram's horn) is blown (Leviticus 23:24; Talmud, Rosh Hashanah 33b-34a), symbolically heralding God's kingship, and calling to mind the covenant of Isaac (see Genesis ch.22). Festive meals are held in the home, and traditional foods (such as the well-known apple dipped in honey) are eaten to symbolize a sweet year.