Setup a rigid body with markers or use one of the preconfigured ones. A rigid body should:
Place the rigid body on the center of the trackingspace so that all markers can be seen by the cameras.
In Motive, go to Menu > Layout > Create
.
Select all reflectors of the rigid body in the perspective view and Right Click on the Markers > Rigid Body > Create from selected markers
.
Once created, give the body a unique name and choose a unique Streaming ID.
Adjust some additional properties if necessary: