Towards the back, behind the furthest two nocks you’ll find the TactileView Digital Pen Dock. It is about two centimeters in height, eight centimeters wide and has rounded corners. On the back of the dock is a small indentation. This is where you can place the receiver for the TactileView Digital Pen. Simply place the receiver’s magnets inside the indentation and the magnets will click in place. Make sure the wire of the receiver is not in the way of the arm.