Chapter 15 – Kaddish (a hymn of praises to G-d), Barhu (bless ye), Minyan (Quorum of Ten Male Adults) and Hazan (cantor of a synagogue)
15.1) Do not read these unless ten male adults are present.
15.2) A male adult is considered someone who is thirteen years old, going on fourteen.
15.3) Do not count people by their polls; rather, count them by Psalms 28:9.
15.4) All ten worshipers and the hazan (cantor of a synagogue) must be present in the same room before reciting these.
15.5) Listen carefully to kaddish (a hymn of praises to G-d) and respond zealously.
15.6) Once standing, remain so until after, Amen yehe shemeh rabba.
15.7) You must have nine persons present to listen to the hazan, or no kaddish is to be said.
15.8) The hazan should respond with the congregation.
15.9) You should recite the kedushah (the third section of all Amidah recitations) with the congregation; if you cannot do so, you can recite it privately in your home.
15.10) If you have only a quorum of ten present in the synagogue, no one is to leave until the benediction is over.
15.11) The hazan must be a worthy person.
15.12) No one should officiate without the consent of the congregation.
15.13) A hazan must be someone with a fully grown beard.