The autoplay of Captivate 13 does not work

Even the autoplay was enabled, the slide does not play automatically. To keep the learning move on, the the NEXT button on playbar has to be enanbled. That creates new problem that the NEXT button on the playbar can skip the video added to the last slide, that video I have the expectation the learner have to watch and wait for the video to finish playing, but the NEXT button on play bar can enable the learner to skip the video. The slide does not move and freeze at the first slide if the NEXT button on playbar is disabled.

How or which function should I set to keep the slides played automatically?