Requiring a Quorum: Megillah 23b
Having a minor lead this: Megillah 24a
Having a person wearing torn, ragged clothing lead this: Megillah 24a
Having a blind person lead this: Megillah 24a, 24b
Having the reader of the Prophets also lead the special service skipping part of the Blessings of the Shema: Megillah 24a-b
