The following tables specify which scheduling privileges grant the right to a calendar user to perform busy time information requests and to submit scheduling messages to other calendar users as the result of a scheduling operation. The appropriate behavior depends on the calendar component type as well as the scheduling "METHOD" specified in the scheduling message.
+--------------------------------+
| METHOD for VEVENT and VTODO |
+-----------------------------+---------+-------+-----+--------+
| Scheduling Outbox Privilege | REQUEST | REPLY | ADD | CANCEL |
+-----------------------------+---------+-------+-----+--------+
| schedule-send | * | * | * | * |
| schedule-send-invite | * | | * | * |
| schedule-send-reply | | * | | |
| schedule-send-freebusy | | | | |
+-----------------------------+---------+-------+-----+--------+
+----------------------+
| METHOD for VFREEBUSY |
+-----------------------------+----------------------+
| Scheduling Outbox Privilege | REQUEST |
+-----------------------------+----------------------+
| schedule-send | * |
| schedule-send-invite | |
| schedule-send-reply | |
| schedule-send-freebusy | * |
+-----------------------------+----------------------+