To access the Pointer Property Page click the edit properties button and select "Hotkeys/Mouse/Pointer".
The top dropdown menu is used to select a mouse to enable. If you have more than one mouse connected make sure that you enable the mouse you want used to control the playlist.
Once your mouse is selected click the function you want (either Next Slide or Previous Slide) to associate with a mouse click/motion and then use the lower dropdown menu to select which mouse click/motion you want to control that function.