You can use the three Edit Palette sliders to send MIDI controller messages for sequencing or controlling an external MIDI device:
- Use the PART RIGHT/LEFT buttons to select the part you wish to control.
- Press MIDI and CONTROL simultaneously.
You are now in real-time control mode. - Use the first slider to transmit Expression (controller #11).
- Use slider number 2 to transmit Pan (Controller #10).
- The third slider is programmable; use the VALUE UP/DOWN buttons to select the Controller number you wish to transmit and adjust the slider as desired.
- When you are finished, press MIDI and CONTROL simultaneously to exit this mode.
Owner's Manual: https://www.roland.com/us/support/manual_archive/