There’s not much of the panel there, and there is a resource missing (The Korg Logo).
Sending stuff to the electribe is easy. Make a modulator and send the message similar to how you have (or possibly sysex for the button presses, if that is supported by Korg).
Receiving data is harder. You will need to use LUA and create a receive MIDI method that instructs Ctrlr what to do each time it receives a message.
Have a look at panels like the generic sysex panel.
My recommendation is learn to send data blindly first. After that begin to look at receive MIDI messages.
The Puppeteer
http://godlike.com.au