I would recommend using Clocks to build a template for the hour and then schedule these clocks for the hours you require. You can set up different clocks if you have different tracks you need to play. You can view a video on Scheduling in PlayIt Live that will give you more information: https://www.youtube.com/watch?v=14Ksmcf5Cy8
Thank you for this.
Is it possible to schedule from an half hour? in playout log the minutes are not selectable
You schedule clocks by the hour but if you have a half hour item you can schedule it after a hard break (at 30 mins) and have the track rotation fill the first half hour. The last track will fade at the hard break.
You can schedule individual tracks so pick the item you want to play and it will.
If you named that clock after that item it will only play when you schedule the appropriate clock.