The features of Choir Genius 4, such as the dashboard, account and person database, child and parent accounts, calendar and events, attendance, volunteer management, time slot sign-up, mailing lists, email sending, bulletins, forms, document management, music library and assignment, learning tracks, riser placement, and the store (which includes donor management, registration, merchandise sales, and ticketing), are all covered in the video below. Some of these features are only available in the "executive" level license.
if you're interested in a particular topic, click the option to watch this video on youtube to find the time stamp annotations and chapter topics.