SlapOS is using promises and tickets to manage network performance. Promises monitor the status of computers and instantiated services. Whenever a Promise fails (eg a computer is not responding for a certain amount of time) a new ticket is created. Thus managing a network means handling tickets and investigating why the ticket had been created.
Note that for adding messages and creating tickets by hand, it is required to be logged in as a regular SlapOS user. It is not possible to work with tickets as a superuser.