Linked Shows are an Airtime feature. In Linked Shows, any content changes made to an upcoming instance of the show will be repeated in all of its upcoming repeats.
Linked Shows can be created in the Calendar pane when you create a repeating show. To create one, schedule a regular show, check the Repeats? box, which will make a new section of the dialog appear.
Click the 'Link' box to automatically schedule the same content in the repeated shows as in the original show. Any changes made to the original show will also be reflected in all of the future instances of that show.
For best results, try to use linked shows sparingly.