Making MIDI Thru active all the time for all tracks

Is there any way to make MIDI Thru active all the time for all tracks?

I have several keyboards (1 per Cubase track) with Local Off set and I have MIDI Thru enabled in Cubase, but I have to walk over to the computer and select the tracks of the keyboards I want to play in order to trigger the sounds. How can I just make MIDI Thru active all the time without having to do that?

Leave the track monitor button on?