In the Select Start Position window you can define which section of a linked video is displayed in the background of a menu side, in the background of the intro video or in the thumbnail view of the Thumbnail button.   
The controller on the navigation strip shows the start position in the video. The duration of the video is automatically customized to the duration of the menu and is displayed graphically by a darker bar on the navigation strip. You can define the desired start position by moving the controller (and bar) on the navigation strip. Or the start position can be defined by entering an exact starting time in the input field below. You can also use the Position buttons next to the time code display.
Additionally, the following setting options are available:
Button
Plays the video back in the preview area of the window. 
Button
Stops the preview. 
Button
Fades the audio in or out during playback in the menu (each one second).
Button with slider
Customizes the sound level of the playback. Click the button to mute the sound.
 
See also
Customize Tab


Select Start Position Window