Hi Alex,
You might be interested in these wiki pages :
https://wiki.mod.audio/wiki/MOD_Web_GUI_User_Guide#Making_an_assignment_to_a_MOD_DUO_control
Using the MIDI tab, you can affect parameters to a MIDI device like the Chocolate.
https://wiki.mod.audio/wiki/Device_Settings#Sync_.26_MIDI
You can also use the Chocolate to switch snapshots and pedalboards.
You can check the Chocolate incoming messages with the MIDI Display plugin, which is in the Beta store.