Click on the Split video button to use the tool. A picker will be shown to select the input video.
In this screen, you can add markers as the split points of the video.
Click on the Save video button to process. You can choose the output format (MP4 or WMV) and quality in the dialog. Then click on the Make movie button.
Save file picker will be shown to select where to save the ouput videos. The number of output videos equals with the number of markers plus one.