PBi and Statistics Videos dont have start and stop options

Hi Pls upload the PBi videos and Statistics videos in start/stop technique ways. We are not able to stop the videos in between. It becomes difficult to study and prctice. It is requested to upload all the videos in start/stop option format so that it can be learnt as and when needed. hope it will be solved. or is there any other way to see the video in stop and continue options just like you tube or other videos. Thanks