Set the Wacom tablet's tracking mode
Tracking Mode determines how the pointer is mapped to the screen.
Click the icon at the far right of the menu bar and select System Settings.
Open Wacom Graphics Tablet.
If no tablet is detected, you'll be asked to Please plug in or turn on your Wacom tablet.
Next to Tracking Mode, select Tablet (absolute) or Touchpad (relative).
In absolute mode, each point on the tablet maps to a point on the screen. The top left corner of the screen, for instance, always corresponds to the same point on the tablet.
In relative mode, if you lift the pointer off the tablet and put it down in a different position, the cursor on the screen doesn't move. This is the way a mouse operates, allowing you to cover distances on the screen with less hand movement.