Manage Users
User and UserGroup management is closely tight with authentication, if you haven’t setup authentication yet check the Set Up Authentication section for further details. Especially for managing users the authentication id is needed.
Both users and user-groups can be managed using entity or declarative interface.
Bootstrap Admin Group Cannot Be Updated or Deleted
Bootstrap user group adminGroup, which is created when a new organization is established, cannot be updated or deleted. Attempting to modify this user group will result in a 400 error stating "Can't override MANAGE permission for the boostrap group 'adminGroup'".