See the Javadocs in <EPM_ORACLE_HOME>/common/docs/ReportingAnalysis/SDK/javadoc.
Use this interface for repetitive event triggering by specifying the date and time in various ways. There are three recurring time event types: public, personal, or unnamed. The default view type of a Recurring Time Event is personal. An unnamed event is a per-schedule event. It is valid only for the schedule for which it is created, and is deleted as soon as the schedule is deleted or the schedule is updated with another event. You can also create events that are a combination of Recurring Time Events and Externally Triggered Events.