It’s tedious to keep swiping your finger along the Timeline to get to a particular clip, or to the very end of your video. The Jump To button is useful to quickly move though your KineMaster video, with a minimum of swiping.
Tap the Jump To button in the bottom left corner of the KineMaster editing screen to rapidly move to the location specified (make sure that nothing is selected in the Timeline). To change the Jump To setting, just tap and hold on the Jump To button to switch between the different jump options.
Also note that pinching your fingers together on the Timeline will zoom out, making the space occupied by all of your media smaller. This can be useful to rapidly move in and out of different parts of your Timeline, without relying on the Jump To button.