Use the field or slider to specify a cutoff for the treatment group differences (calculated from the treatment group LSMeans) that are displayed in the x -axis of Volcano Plot s formed for the statistical tests.Note : Values entered in using this parameter should be positive values indicating the magnitude of the cutoff. You can specify direction using the Direction of the Treatment Group Difference parameter.Tip : To change the scale of the slider, right-click on the slider and select from the pop-up menu. Change the upper or lower boundaries in the window that appears, to rescale the slider and click .