Calendar Server considers the following users when determining access to calendars, calendar properties, and calendar components:
Primary calendar owners have full access to their own calendars. Calendar Server does not perform any access control checks for primary owners accessing their own calendars.
An administrator such as calmaster, or a superuser such as root, is not subject to access control restrictions and can perform any operation on a calendar or calendar component. For more information, see Calendar Server Special Accounts.
Primary calendar owners can designate other owners for their calendars. The other owner can then act on behalf of the primary owner to schedule, delete, modify, accept, or decline events or todos (tasks) for a calendar.
The special calendar ID (calid) anonymous can access Calendar Server using any password, if service.http.allowanonymouslogin in the ics.conf file is set to “yes” (which is the default). The anonymous user is not associated with any particular domain. You can change the calid for the anonymous user by editing the calstore.anonymous.calid parameter.
You can also view a calendar anonymously if the calendar’s permissions allow read access for everybody. For example, the following link allows users to anonymously view the calendar with the calid tchang:meetings (if the calendar’s permissions allow read access for everybody):
An anonymous user can view, print and search for public events and tasks on the calendar but cannot perform any other operations.
For information about viewing a resource calendar anonymously, see Linking to a Calendar.