Theres a text config file somewhere in the user data folder where you can specify the midi channels for program change to snapshot and pedalboards. Im sorry but I can remenber the filename atm, but its pretty easy to find using winscp or shh prompt. Ive managed to get the snapshots changes working, but not the pedalboards, but the pedalboard program changes only work if you dont open the web gui, so maybe thats why I havent got it to work.