In GrandBilliards, how do you jump the cue ball?

very easy to jump, hopefully you have a jump cue, but can jump with shooting cue also. so depending on the distance you need to jump, the closer you are to the object ball the higher you jack, if you jump a long distance, keep the cue more level and pound down on the cue ball, have to hit down to be legal, no scooping from under neath, just practices putting the cue ball 12in from the object ball you wanna jump, jack up alittle, pound down on the cue, and up it goes. gl.