Go to the Management tab and select the Schedule section.  Click on a time slot on the scheduler. A pop up window will appear as to create a schedule. Select the Relay tab.

relay schedule

Add the relay url at the corresponding field. Make sure that you have the rights as to rebroadcast that program. In order to set up a relay you need a .m3u or a .mp3 link.

Then, select the start/end date of your schedule and the duration of the relay. If this is a planned relay and not a one time thing, you can set the repetition rate accordingly to weekdays, weekends or every week. 

Owners and administrators can schedule relays.