From Rivendell Wiki
RDLogManager is a dual-mode Rivendell app used for manipulating Logs. In GUI mode RDLogManager presents you with options for creating and modifying Events, Clocks and Grids. It also presents you with the option to generate a new Log and to generate a Report.
In command-line mode (CLI mode), RDLogManager has options for generating logs, importing traffic and music from external schedulers, and for generating reports. See the manual page for rdlogmanager(1) for all the details.