Coal loading tutorial - help!

OK, so I get to the little integrated display and it tells me to right-click to use it. Fine. Nothing more than that except I'm instructed to set the slow speed to 2 MPH.
Um, none of the keys work ... clicking on the screen does nothing. Right-clicking again puts me back to normal mode I guess but I still can't figure out how to use the display or set the speed. I tried moving the mouse around hoping a hint would show up but nothing ...
Can someone enlighten me? I'm going to try to find the online manual in search of further information too.
Um, none of the keys work ... clicking on the screen does nothing. Right-clicking again puts me back to normal mode I guess but I still can't figure out how to use the display or set the speed. I tried moving the mouse around hoping a hint would show up but nothing ...
Can someone enlighten me? I'm going to try to find the online manual in search of further information too.