Fixtures can have information about their position in a 3D selection grid.Each fixture is symbolized as a box using one space in the grid.The grid is a way to organize the fixtures in relation to each other but not necessarily their position in the 3D Window.The grid is used when a range of values are applied. Fixtures positioned at the same X and Y axis but at different Z axis will have the same value applied.In the first example picture below the fixtures were selected using a group with the grid information and then colors were assigned using the Align function in the color picker. The value range is applied from the lowest column to the highest column number in the selection window.The fixtures position in a grid can be seen in the Selection Window.