You can change the MIDI signal that Midi Controller sends.
CSV files are used to move data between apps.
Therefore, it is possible to change the settings without using this application, but we recommend that you install this application once and create a CSV file to check the format.

Press the same button as for Midi Controller and enter the MIDI information you want to send in the dialog that appears.

The usage procedure is as follows.
1. When starting for the first time, press [INIT.] To create a file.
    A folder called Midi Controller is created directly under the device, and a file called "config.csv" is created inside.
▽ The Midi Controller app reads the file with this position and name, so if you change it, you will not be able to read it.
2. After creating the file with [INIT.], Press [READ] to read the file.
3. Click the button for which you want to change the MIDI signal.
4. A dialog will be displayed. Change it and click [OK].
5. After inputting each button, press [WRITE] to write in config.csv.
6. Start up and use the Midi Controller.

I also wrote an explanation on the blog.
https://iimhmt.blogspot.com/2020/05/midi-controller-config_31.html