I dont know how to program an inspire nor do I know if the following is possible

Is it possible to program the Ti Nspire Cx CAS's numeric keys 2,4,6,8 to move the cursor (down, left, right , up) on the screen while holding the control button ? I think it will make it more comfortable to maneuver in scratch pad . It also seems more convenient and less time consuming. It would make me very happy if it were possible , Thank you very much for taking the time to read this !!