The idea is that the preparation of a conference goes through several stages. Implicitly, a track refers to a conference . PC chairs can update and delete track data. Papers are submitted to a conference track. Papers are listed by track.
Subscription involves specifying a name and email address.
The system generates credentials and sends an url containing these credentials to the specified email address. The url gives access to the user page of the subscriber. This process is called anonymous subscription . Implicitly, a person refers to a conference . PC chairs can also demote chairs and members.