Use the options on the Solids > Face Coordinate System menu to define a Face Coordinate System (FCS) and control how it is displayed.
Face Coordinate System (FCS) is the 3D coordinate system, consisting of the two axes of the Face Plane, the third axis perpendicular to the Face Plane and passing through the Face Origin, for a given Face window.
The Face Plane is a plane in which the toolpaths in the active PartMaker Face window are created. Each Face window can have its own Face Plane. The Face Plane must be set in the correct place so you can program correctly on the solid model.