All anchors should be mounted around stage on different heights. To get accurate Z-axes positions it is necessary to mount the anchors on multiple Z-levels. Below you will find 2 examples for a 3D anchor setup.
For a 3D position the system picks at least 4 anchors.
Note: You can change the tracking type from 2D to 3D direct on each tracker on the lightconsole
Note: Do not place an anchor directly next to a fixture