connect a midi controller keyboard (or drum pad) to the midi in on your octatrack.

set the midi channel on the controller keyboard to be the same as the “auto” channel on your octatrack. check out the OT manual if you don’t know what the “Auto” channel is or how to set it.

you should now be able to real time record notes on the OT midi sequencer track by “playing” them in from the controller keyboard.

the beauty of using the “auto” midi channel is that it will just forward the notes to whichever track you have selected on the octatrack.

but, if you’re looking to step sequence only, then i think you are stuck with having to use the data encoder to select the note(s). don’t forget that once you enter a trig with various note(s) that you like, you can copy and paste that individual trig within the track