Accounts & Organisations
Understand the difference between your personal Account and the Organisation (Supplier, Venue, Agency) it can belong to.
Bookings
What a Booking is in Eleventh — ownership, who it links together, and where it lives in the data model.
Roles & Permissions
How Eleventh's role-based access control works — custom roles (grant/revoke ACLs), permission implications, adn per-member overrides.