The lithospheric crust of the Earth is broken up into tectonic plates. These plates move in relation to one another some centimeters per year. Trimble 4D Control Server comes with a selection of tectonic plates with the plate rotation rates for geographical and Cartesian coordinates. For selecting the matching tectonic plate, use the Tectonic Plate settings list. If the tectonic plate is None, you can use the X,Y,Z Velocity station settings for filling in the appropriate velocities.