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You can create a day-parted schedule by scheduling presentations in separate time slots of a single day (or a set of recurring days). Later on, you may need to schedule a new presentation in an occupied time slot. This is where schedule interrupts are useful.
If you would like to interrupta scheduled presentation with another presentation, drag and drop the new presentation into an occupied time slot (you can also schedule an overlap in the Schedule Presentation window). A Schedule Conflict window will appear, providing the following options:
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