1) Press [FUNCTION]
2) Press [I] 'MIDI'
3) Press [8V] 'EDIT'
4) Press [TAB >] 'Receive page'
5) Highlight channel 1 (assuming you are transmitting on channel 1)
6) Press [3V] to select 'KEYBOARD'
NOTE: This will make the WX5 behave as if it is a RIGHT 1 voice. you can transmit on channel 2 if youd like and use Right 2. it is up to you.