Create a rigid body

Motive > Menu > Layout > Create

Setup a rigid body. A rigid body should

have at least 3 reflectors

NOT be a symetrical

NOT be just one line (i.e. like the wand)

Place the rigid body on the center of the trackingspace.

Select the reflectors of this body

rightClick > rigid body > create from selected marker

once created, give the body a unique name and choose a streaming ID.

adjust some additional properties:

Smoothing - the higher the number, the smoother the tracking - but also creates more latency.