If Pointer does not appear after importing, please follow the steps given in LaserRayFix
Go to Asset > JMRSDK > Core > Prefabs > Pointers > JMRLaserPointer and check in the inspector.
Set LineMaterial to LaserPointerMatUnlit
Set Line Renderer to JMRSDK > Core > Prefabs > Pointers > JMRLaserPointer.
Set Width Multiplier to 0.04.
Set Line Number Steps to 20.
See also:
Gaze and Dwell