Authorization levels define what a verified identity is allowed to do: which doors it may open, which footage it may view and which settings it may change. Levels usually run from view-only through operator to administrator. The hierarchy exists so routine work does not need rights that could disable logging or unlock every door.
Authorization is the second half of access control. Authentication says who someone is; authorization decides the reach of that identity, and it is where most practical security is won or lost.
Levels in an access control system
Typical levels separate viewing, operating, enrolling and administering. An operator may release a door remotely for a delivery; an administrator adds users and changes schedules. The platform should record which level performed each action, otherwise the highest privilege in the building is invisible.
Keeping levels honest
Grant the least a role needs, review membership on a schedule, and withdraw admin rights when a project ends. Service accounts used by integrations deserve their own limited level rather than a copy of the installer’s account. Write the levels down, so a new administrator inherits a documented structure rather than guessing at one.