i haven't actually tried it out yet but my guess is that the keys on the numpad are meant to by hotkeys for the action point and hotspot
7 8 9
4 5 6
1 2 3
the resulting positions of the points after pressing the numbers should correspond with the placing of the numbers on the num pad
so pressing 1, 3, 7, and 9 will place the point in the corners, 2, 4, 6, and 8 will place the point on the sides and 5, in the center
i forget is 0 does anything