There's a conventional transport slider you can use simply by tapping on the upper left of the volume boost slider.
We are updating the documentation, but essentially, this converts the volume boost slider to a transport slider for moving in larger increments. The new version (3.0) adds markers so you can more easily get to locations throughout the file. Also, not that there are two modes for the jog/shuttle wheel (to the left, you can tap the button to change modes).
Hope this helps!