How to send program changes from MPC 1 to a midi guitar?

Hello all.
I just bought a Jamstik Studio midi guitar. I plan to pair it with my MPC 1 to make backup tracks.
Can someone give me a quick tutorial on how to program de MPC sequencer to send midi program changes, in order to change the guitar sound in the middle of a performance?
Thanks in advance for your input!

With MIDI program, a program change message is sent at the beginning of the sequence, or you can insert it in the LIST Edit (Insert > Track automation > Program change).