How to use PROG track?

[Aleksandr-ru]

I'm using ESPDuino-32 with Arduino Motor Shield. In configuration ESP32 / H-Bridge Selection = "ESP32 with Arduino Motor Shield (OPS and PROG)" Enable OPS track output = checked Enable PROG track output = checked

But in the web interface there is nothing about PROG track. I've searched sources of web interface and fount nothing about "prog" (like ops_track_power). What should I do to program CVs of my loco through the command station?