If I understand the question correctly, you need to click on C-plane in the main menu and look for Entity, click on Entity then pick 2 lines on your screen that are at right angles, you will get a prompt on the screen asking you if the axis are the way you want them to be. When ready Click save and note the C-plane number it defaults to. This number is also going to be the G-view number. The key to the process is accurately creating the 2 lines at right angles in the correct location in a 3D space. Mick