Select data you want to apply this method in Analysis Window and click Matrix Multiplication in Analysis Window. This will display a dialogue box for matrix setting as shown in the below, so you can input matrix values as you want. The dialogue box for matrix setting varies depending on the number of data channels. In the case of 2-channel data, 2 x 2 matrix will be displayed. In the case of 4-channel data, the dialogue box for 4 x 4 matrix will be displayed as shown in the below. Using this dialogue box, you can make new data you want. Further, matrix values frequently used can be saved as a file. Select the frequently used matrix and click File Save in the dialogue box for matrix setting. This will result in a saved file (.mtx). You can retrieve and use this saved matrix at any time.