The Source Monitor and Program Monitor contain several controls that resemble the playback controls on a video deck. To play or cue a clip, use the Source Monitor controls. To play or view the active sequence, use the Program Monitor controls.
By default, the most useful buttons are displayed along the bottom of the Source and Program Monitors. However, the playback controls are customizable with the use of the Button Editor. To open the button editor, click the icon at the lower right corner of the panel. The Button Editor launches. Drag the button of your choice into the button bar.