Hi kingbee,
Yes, this is possible. This can be configured in the System Menu’s MIDI section. When the Output mode is set to Transmit, any program changes can be sent to downstream devices connected to the MIDI out. It is also possible to program an aux switch to send program search commands as well. All answers can be found in this video beginning at 8:38: https://youtu.be/tfd3wQHzxcA?si=HXvDX_JL55d578_c
