Preferably, when putting on the Tallit, one should intend that the Brachah also applies to putting on the Tallit after the break, before Mincha.
The Chazanim should familiarize themselves in advance with the meaning of all of the Piyuttim and Tefillot – even if they already did so the previous year. Similarly, one should train his children regarding the correct order of davening beforehand, so as to minimize any distractions during davening.
Shir Hamaalot (after Yishtabach): Some have the custom to open the Aron Hakodesh, as well as to recite it verse by verse after the Chazzan.
When the Aron Hakodesh is opened during Chazarat Hashatz, it is not obligatory to stand, since the Sefer Torah is not being moved. Some have the custom to stand.
At Shacharit, the paragraph of Misod (at the beginning of Chazarat Hashatz) and the one that follows, is recited by the Chazzan and not by the congregation.
During Chazarat Hashatz, the congregation recites the selections of U’Chtov and u’Vsefer Chaim aloud before the Chazzan. Most congregations also say Zachreinu Lechaim and Mi Chamocha aloud too.
One may not speak when the congregation recites Viduy during Chazarat Hashatz.
Kohanim wash their hands up to the wrist before Birchat kohanim.
One must complete the daily quota of 100 Brachot. As we can’t eat or drink on Yom Kippur, one must find other ways to meet this quota, such as by concentrating on the Brachot that are recited during Kriat Hatorah and Haftorah, or by reciting Besamim over fragrant spices.
It is customary to grant an Aliyah to the Ba’al Musaf unless he is being paid.
